diff --git a/intro/tech_diff.asm b/intro/tech_diff.asm
index 87fd22a..d6c3fe4 100644
--- a/intro/tech_diff.asm
+++ b/intro/tech_diff.asm
@@ -13,7 +13,7 @@
     icl '../lib/MACRO.ASM'
 ;---------------------------------------------------
     ; BASIC off
-    ORG $2000
+    ORG $2700
     mva #$ff portb
     mwa #DL_pre dlptrs
     lda #@dmactl(narrow|dma)  ; narrow screen width, DL on
@@ -47,7 +47,7 @@ leet_anim
     ;is the letter leetable?
     cmp #"a"
     bcc next_letter
-    cmp #"z"
+    cmp #"z"+1
     bcs next_letter
     ;letter is leetable
     beq next_letter
@@ -121,7 +121,7 @@ leet_speek2
 leet_speek3
     dta "4&[)eF9-|jk_mn0p@r57uvw*y2"
 leet_speek4
-    dta "^b(>",$5b,$41,"gh1",$4c+$80,"k",$4b+$80,"M\",$54,$49+$80,"q",$51,"5",$57,"uvwxyz"
+    dta "^b(>",$5b,$41,"gh1",$4c+$80,"k",$4b+$80,"M\",$54,$49+$80,"q",$51,"5",$57,"uvwxy/"
 
 leet_speeks_l
     .by <leet_speek1
@@ -135,6 +135,7 @@ leet_speeks_h
     .by >leet_speek4
 leet_screen 
     .ds 32*9
+leet_screen_end 
     ini $2000
 ;---------------------------------------------------
 
@@ -221,7 +222,7 @@ please_wait_loop
 @
     inx
     cpx #13
-    sne:ldx #0
+    sne:ldx #1
     jmp please_wait_loop
 
 exit_tech_diff
@@ -261,9 +262,6 @@ sample_end4
 sample5
     ins 'wait5.wav.bin'
 sample_end5
-sample6
-    ins 'wait6.wav.bin'
-sample_end6
 
 samples_l
     .by <sample1
@@ -278,7 +276,6 @@ samples_l
     .by <sample2
     .by <sample4
     .by <sample2
-    .by <sample6
 samples_h
     .by >sample1
     .by >sample2
@@ -292,7 +289,6 @@ samples_h
     .by >sample2
     .by >sample4
     .by >sample2
-    .by >sample6
 samples_end_l
     .by <sample_end1
     .by <sample_end2
@@ -306,7 +302,6 @@ samples_end_l
     .by <sample_end2
     .by <sample_end4
     .by <sample_end2
-    .by <sample_end6
 samples_end_h
     .by >sample_end1
     .by >sample_end2
@@ -320,6 +315,5 @@ samples_end_h
     .by >sample_end2
     .by >sample_end4
     .by >sample_end2
-    .by >sample_end6
 finito
     ini start
diff --git a/intro/tech_diff.xex b/intro/tech_diff.xex
index cee4a66..c75424a 100644
Binary files a/intro/tech_diff.xex and b/intro/tech_diff.xex differ
diff --git a/intro/wait1.wav b/intro/wait1.wav
index 84f9b93..c3ea1b5 100644
Binary files a/intro/wait1.wav and b/intro/wait1.wav differ
diff --git a/intro/wait1.wav.bin b/intro/wait1.wav.bin
index 55fb2d0..431f0bd 100644
Binary files a/intro/wait1.wav.bin and b/intro/wait1.wav.bin differ
diff --git a/intro/wait2.wav b/intro/wait2.wav
index 067bc73..6ac371b 100644
Binary files a/intro/wait2.wav and b/intro/wait2.wav differ
diff --git a/intro/wait2.wav.bin b/intro/wait2.wav.bin
index d27cc10..07ccfe4 100644
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diff --git a/intro/wait3.wav b/intro/wait3.wav
index 2aace4f..5faa8ec 100644
Binary files a/intro/wait3.wav and b/intro/wait3.wav differ
diff --git a/intro/wait3.wav.bin b/intro/wait3.wav.bin
index 7311b6e..afd4f31 100644
Binary files a/intro/wait3.wav.bin and b/intro/wait3.wav.bin differ
diff --git a/intro/wait4.wav b/intro/wait4.wav
index ebb719e..2fb1b45 100644
Binary files a/intro/wait4.wav and b/intro/wait4.wav differ
diff --git a/intro/wait4.wav.bin b/intro/wait4.wav.bin
index 3fa5d33..5cdfa37 100644
Binary files a/intro/wait4.wav.bin and b/intro/wait4.wav.bin differ
diff --git a/intro/wait5.wav b/intro/wait5.wav
index 38ff085..1c38792 100644
Binary files a/intro/wait5.wav and b/intro/wait5.wav differ
diff --git a/intro/wait5.wav.bin b/intro/wait5.wav.bin
index e59f0ad..172b1e0 100644
Binary files a/intro/wait5.wav.bin and b/intro/wait5.wav.bin differ
diff --git a/intro/wait6.wav b/intro/wait6.wav
index 7d121e2..6280e44 100644
Binary files a/intro/wait6.wav and b/intro/wait6.wav differ
diff --git a/intro/wait6.wav.bin b/intro/wait6.wav.bin
index 416496f..5990aab 100644
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