diff --git a/pt3_player/OPTIMIZATION.txt b/pt3_player/OPTIMIZATION.txt
index 025f0127..279d50f5 100644
--- a/pt3_player/OPTIMIZATION.txt
+++ b/pt3_player/OPTIMIZATION.txt
@@ -28,6 +28,7 @@ Code Optimization
 	Fixes,zero init 2776	??	1C.10	28s	171s	16.3%
 	Qkumba-SuperSMC	2739	??	1B.15	27s	171s	15.8%
 	MoveNoteToZP	2650	??	1A.23	26s	171s	15.2%
+	MinorFixes	2418 + 143	1A.1F	26s	171s	15.2%
 
 Times:							Validated
 	BH.PT3:	10.0B	16	1:33	 93	17.2%	
diff --git a/pt3_player/pt3_lib.s b/pt3_player/pt3_lib.s
index 8fd33284..504c060a 100644
--- a/pt3_player/pt3_lib.s
+++ b/pt3_player/pt3_lib.s
@@ -409,7 +409,7 @@ zero_song_structs_loop:
 	sta	pt3_envelope_delay_smc+1				; 4
 	sta	pt3_envelope_delay_orig_smc+1				; 4
 
-	sta	pt3_mixer_value_smc+1					; 4
+	sta	PT3_MIXER_VAL						; 3
 
 	sta	current_pattern_smc+1					; 4
 	sta	current_line_smc+1					; 4
@@ -986,9 +986,9 @@ noise_slide_done:
 	lda	sample_b1_smc+1	;  pt3->mixer_value = ((b1 >>1) & 0x48) | pt3->mixer_value;
 	lsr
 	and	#$48
-pt3_mixer_value_smc:
-	ora	#$d1
-	sta	pt3_mixer_value_smc+1
+
+	ora	PT3_MIXER_VAL					; 3
+	sta	PT3_MIXER_VAL					; 3
 
 
 	;========================
@@ -1024,7 +1024,7 @@ done_note:
 	; set mixer value
 	; this is a bit complex (from original code)
 	; after 3 calls it is set up properly
-	lsr	pt3_mixer_value_smc+1
+	lsr	PT3_MIXER_VAL
 
 handle_onoff:
 	ldy	note_a+NOTE_ONOFF,X	;if (a->onoff>0) {
@@ -1890,7 +1890,7 @@ do_frame:
 	; R14/R15 = I/O (ignored)
 
 	ldx	#0			; needed			; 2
-	stx	pt3_mixer_value_smc+1					; 4
+	stx	PT3_MIXER_VAL						; 3
 	stx	pt3_envelope_add_smc+1					; 4
 
 	;;ldx	#(NOTE_STRUCT_SIZE*0)	; Note A			; 2
@@ -2067,17 +2067,16 @@ no_scale_n:
 	;=======================
 	; Mixer
 
-	lda	pt3_mixer_value_smc+1					; 4
-	sta	AY_REGISTERS+7						; 3
+	; PT3_MIXER_VAL is already in AY_REGISTERS+7
 
 	;=======================
 	; Amplitudes
 
-	lda	note_a+NOTE_AMPLITUDE					; 4
+	lda	note_a+NOTE_AMPLITUDE					; 3
 	sta	AY_REGISTERS+8						; 3
-	lda	note_b+NOTE_AMPLITUDE					; 4
+	lda	note_b+NOTE_AMPLITUDE					; 3
 	sta	AY_REGISTERS+9						; 3
-	lda	note_c+NOTE_AMPLITUDE					; 4
+	lda	note_c+NOTE_AMPLITUDE					; 3
 	sta	AY_REGISTERS+10						; 3
 
 	;======================================
diff --git a/pt3_player/zp.inc b/pt3_player/zp.inc
index a2211113..6450b2ea 100644
--- a/pt3_player/zp.inc
+++ b/pt3_player/zp.inc
@@ -45,20 +45,21 @@ SEEDH	=	$4F
 ;FILEMH		= $65
 
 AY_REGISTERS	= $50
-A_FINE_TONE	= $50
-A_COARSE_TONE	= $51
-B_FINE_TONE	= $52
-B_COARSE_TONE	= $53
-C_FINE_TONE	= $54
-C_COARSE_TONE	= $55
-NOISE		= $56
-ENABLE		= $57
-A_VOLUME	= $58
-B_VOLUME	= $59
-C_VOLUME	= $5A
-ENVELOPE_FINE	= $5B
-ENVELOPE_COARSE	= $5C
-ENVELOPE_SHAPE  = $5D
+	A_FINE_TONE	= $50
+	A_COARSE_TONE	= $51
+	B_FINE_TONE	= $52
+	B_COARSE_TONE	= $53
+	C_FINE_TONE	= $54
+	C_COARSE_TONE	= $55
+	NOISE		= $56
+	ENABLE		= $57
+	PT3_MIXER_VAL	= $57
+	A_VOLUME	= $58
+	B_VOLUME	= $59
+	C_VOLUME	= $5A
+	ENVELOPE_FINE	= $5B
+	ENVELOPE_COARSE	= $5C
+	ENVELOPE_SHAPE  = $5D
 
 PATTERN_L	= $00
 PATTERN_H	= $01