diff --git a/planter.py b/planter.py
index e802b53..add0566 100644
--- a/planter.py
+++ b/planter.py
@@ -110,7 +110,7 @@ result = (
     .extrude(10)
 )
 
-result = result.workplane(offset=(planter_height / 2) - 15.8).threadedHole(
+result = result.workplane(offset=(planter_height / 2) - 15.6).threadedHole(
     screw, 20, simple=simple, fit="Loose"
 )