diff --git a/src/dactyl_keyboard/dactyl.clj b/src/dactyl_keyboard/dactyl.clj
index 8b96fd6..021e7bc 100644
--- a/src/dactyl_keyboard/dactyl.clj
+++ b/src/dactyl_keyboard/dactyl.clj
@@ -32,7 +32,7 @@
 
 (def thumb-offsets [6 -3 7])
 
-(def keyboard-z-offset 10)               ; controls overall height; original=9 with centercol=3; use 16 for centercol=2
+(def keyboard-z-offset 9)               ; controls overall height; original=9 with centercol=3; use 16 for centercol=2
 
 (def extra-width 2.5)                   ; extra space between the base of keys; original= 2
 (def extra-height 1.0)                  ; original= 0.5