diff --git a/notebook_nueva/lid.py b/notebook_nueva/lid.py
index bc38db4..01011e4 100644
--- a/notebook_nueva/lid.py
+++ b/notebook_nueva/lid.py
@@ -5,7 +5,7 @@ from modelo import mounting_pillar_positions, shell_t, width
 from utils import hex_vents, punch_hole
 
 # Dimensions for countersunk M4 screws
-m4_top = 8
+m4_top = 9
 m4_bottom = 4
 
 
@@ -45,7 +45,7 @@ def model():
             model.faces(">Z")
             .workplane(centerOption="CenterOfBoundBox")
             .center(-width / 2 + position[0], height / 2 - position[1] - shell_t)
-            .placeSketch(cq.Sketch().circle(6))
+            .placeSketch(cq.Sketch().circle(m4_top / 2 + 1.5))
             .extrude(-thickness)
             .faces(">Z")
             .workplane(centerOption="CenterOfBoundBox")