diff --git a/lib/ac-api/src/main/java/com/webcodepro/applecommander/util/readerwriter/OverrideFileEntryReader.java b/lib/ac-api/src/main/java/com/webcodepro/applecommander/util/readerwriter/OverrideFileEntryReader.java
index 7413d0b..414366f 100644
--- a/lib/ac-api/src/main/java/com/webcodepro/applecommander/util/readerwriter/OverrideFileEntryReader.java
+++ b/lib/ac-api/src/main/java/com/webcodepro/applecommander/util/readerwriter/OverrideFileEntryReader.java
@@ -24,6 +24,7 @@ import java.util.Date;
 import java.util.List;
 import java.util.Objects;
 import java.util.Optional;
+import java.util.logging.Logger;
 
 /**
  * Allow programmatic control of what is in the results of the file entry.
@@ -31,6 +32,8 @@ import java.util.Optional;
  * It can also be used to layer in results and overrides.
  */
 public class OverrideFileEntryReader implements FileEntryReader {
+    private static Logger LOG = Logger.getLogger(OverrideFileEntryReader.class.getName());
+    
     private Optional<FileEntryReader> parent = Optional.empty();
     private Optional<String> filename = Optional.empty();
     private Optional<String> prodosFiletype = Optional.empty();
@@ -109,97 +112,138 @@ public class OverrideFileEntryReader implements FileEntryReader {
         
         public Builder filename(String filename) {
             Objects.requireNonNull(filename);
+            LOG.finest(() -> String.format("Setting filename to '%s'", filename));
             fileEntryReader.filename = Optional.of(filename);
             return this;
         }
         public Builder filename(Optional<String> filename) {
             Objects.requireNonNull(filename);
+            filename.ifPresent(name -> {
+                LOG.finest(() -> String.format("Setting filename to '%s'", name));
+            });
             fileEntryReader.filename = filename;
             return this;
         }
         public Builder prodosFiletype(String filetype) {
             Objects.requireNonNull(filetype);
+            LOG.finest(() -> String.format("Setting file type to '%s'", filetype));
             fileEntryReader.prodosFiletype = Optional.of(filetype);
             return this;
         }
         public Builder prodosFiletype(Optional<String> filetype) {
             Objects.requireNonNull(filetype);
+            filetype.ifPresent(type -> {
+                LOG.finest(() -> String.format("Setting file type to '%s'", type));
+            });
             fileEntryReader.prodosFiletype = filetype;
             return this;
         }
         public Builder locked(boolean locked) {
+            LOG.finest(() -> String.format("Setting locked to '%b'", locked));
             fileEntryReader.locked = Optional.of(locked);
             return this;
         }
         public Builder locked(Optional<Boolean> locked) {
+            locked.ifPresent(flag -> {
+                LOG.finest(() -> String.format("Setting locked to '%b'", flag));
+            });
             Objects.requireNonNull(locked);
             fileEntryReader.locked = locked;
             return this;
         }
         public Builder fileData(byte[] fileData) {
             Objects.requireNonNull(fileData);
+            LOG.finest(() -> String.format("Setting data fork to %d bytes.", fileData.length));
             fileEntryReader.fileData = Optional.of(fileData);
             return this;
         }
         public Builder fileData(Optional<byte[]> fileData) {
             Objects.requireNonNull(fileData);
+            fileData.ifPresent(data -> {
+                LOG.finest(() -> String.format("Setting data fork to %d bytes.", data.length));
+            });
             fileEntryReader.fileData = fileData;
             return this;
         }
         public Builder resourceData(byte[] resourceData) {
             Objects.requireNonNull(resourceData);
+            LOG.finest(() -> String.format("Setting data fork to %d bytes.", resourceData.length));
             fileEntryReader.resourceData = Optional.of(resourceData);
             return this;
         }
         public Builder resourceData(Optional<byte[]> resourceData) {
             Objects.requireNonNull(resourceData);
+            resourceData.ifPresent(data -> {
+                LOG.finest(() -> String.format("Setting resource fork to %d bytes.", data.length));
+            });
+            LOG.finest(() -> String.format("Setting file data to %d bytes.", resourceData.orElse(new byte[0]).length));
             fileEntryReader.resourceData = resourceData;
             return this;
         }
         public Builder binaryAddress(int binaryAddress) {
             fileEntryReader.binaryAddress = Optional.of(binaryAddress);
+            LOG.finest(() -> String.format("Setting address to $%04xs.", binaryAddress));
             return this;
         }
         public Builder binaryAddress(Optional<Integer> binaryAddress) {
             Objects.requireNonNull(binaryAddress);
+            binaryAddress.ifPresent(addr -> {
+                LOG.finest(() -> String.format("Setting address to $%04xs.", addr));
+            });
             fileEntryReader.binaryAddress = binaryAddress;
             return this;
         }
         public Builder binaryLength(int binaryLength) {
+            LOG.finest(() -> String.format("Setting binary length to %04x.", binaryLength));
             fileEntryReader.binaryLength = Optional.of(binaryLength);
             return this;
         }
         public Builder binaryLength(Optional<Integer> binaryLength) {
             Objects.requireNonNull(binaryLength);
+            binaryLength.ifPresent(length -> {
+                LOG.finest(() -> String.format("Setting binary length to %04x.", length));
+            });
             fileEntryReader.binaryLength = binaryLength;
             return this;
         }
         public Builder auxiliaryType(int auxiliaryType) {
+            LOG.finest(() -> String.format("Setting aux type to $%04x.", auxiliaryType));
             fileEntryReader.auxiliaryType = Optional.of(auxiliaryType);
             return this;
         }
         public Builder auxiliaryType(Optional<Integer> auxiliaryType) {
             Objects.requireNonNull(auxiliaryType);
+            auxiliaryType.ifPresent(type -> {
+                LOG.finest(() -> String.format("Setting aux type to $%04x.", type));
+            });
             fileEntryReader.auxiliaryType = auxiliaryType;
             return this;
         }
         public Builder creationDate(Date creationDate) {
             Objects.requireNonNull(creationDate);
+            LOG.finest(() -> String.format("Setting creation date to %s.", creationDate));
             fileEntryReader.creationDate = Optional.of(creationDate);
             return this;
         }
         public Builder creationDate(Optional<Date> creationDate) {
             Objects.requireNonNull(creationDate);
+            creationDate.ifPresent(date -> {
+                LOG.finest(() -> String.format("Setting creation date to %s.", date));
+            });
             fileEntryReader.creationDate = creationDate;
             return this;
         }
         public Builder lastModificationDate(Date lastModificationDate) {
             Objects.requireNonNull(lastModificationDate);
+            LOG.finest(() -> String.format("Setting last modification date to %s.", lastModificationDate));
             fileEntryReader.lastModificationDate = Optional.of(lastModificationDate);
             return this;
         }
         public Builder lastModificationDate(Optional<Date> lastModificationDate) {
             Objects.requireNonNull(lastModificationDate);
+            lastModificationDate.ifPresent(date -> {
+                LOG.finest(() -> String.format("Setting last modification date to %s.", date));
+            });
             fileEntryReader.lastModificationDate = lastModificationDate;
             return this;
         }