diff --git a/carlson_amp_enclosure.py b/carlson_amp_enclosure.py
index 0d85c89..1978c42 100644
--- a/carlson_amp_enclosure.py
+++ b/carlson_amp_enclosure.py
@@ -17,9 +17,9 @@ Workplane.addSvgPath = addSvgPath
 screw_simple = True  # Controls whether to not actually make the screw threads, saves time running it for testing
 
 screw_length = 10
-top_screw = ButtonHeadScrew(
-    size="M3-0.5",
-    fastener_type="iso7380_1",
+top_screw = CounterSunkScrew(
+    size="M2.5-0.45",
+    fastener_type="iso7046",
     length=screw_length * MM,
     simple=screw_simple,
 )
@@ -79,12 +79,12 @@ top = top.workplane(offset=-0.8).box(
 top = (
     top.faces(">Z[3]")
     .rect(
-        box_length - 5.5,
-        box_width - 5.5,
+        box_length - 6.5,
+        box_width - 6.5,
         forConstruction=True,
     )
     .vertices()
-    .cboreHole(2.0, 3.0, 1.1)
+    .cboreHole(2.9, 3.5, 1.1)
 )
 
 speaker_length = (
@@ -102,12 +102,30 @@ top = (
     .move(speaker_length / 2.0, 0)
     .cylinder(5, speaker_width / 2.0, combine="cut")
 )
+
 top = (
     top.workplane()
     .move(-(speaker_length / 2.0), 0)
     .cylinder(5, speaker_width / 2.0, combine="cut")
 )
 
+top = top.workplane(offset=1).box(10, 20.8, 3.0, combine="cut")
+
+top = (
+    top.workplane(offset=1).move(10.5 / 2.0, 0).cylinder(3.0, 20.8 / 2.0, combine="cut")
+)
+
+top = (
+    top.workplane(offset=1)
+    .move(-(10.5 / 2.0), 0)
+    .cylinder(3.0, 20.8 / 2.0, combine="cut")
+)
+
+for i in range(0, 11, 2):
+    top = top.workplane(offset=-0.69).move(i, 0).box(0.8, 15, 0.4)
+
+for i in range(0, 11, 2):
+    top = top.workplane(offset=-0.69).move(-i, 0).box(0.8, 15, 0.4)
 
 bottom = result.workplane(offset=(box_height / 2) - 2).split(keepBottom=True)
 
@@ -117,14 +135,14 @@ bottom = bottom.workplane(offset=box_height + 5).box(
 
 bottom = (
     bottom.workplane(offset=(box_height / 2) - 9)
-    .rect(box_length - 5.5, box_width - 5.5)
+    .rect(box_length - 6.5, box_width - 6.5)
     .vertices()
     .cylinder(box_height - wall_thickness * 1.5, 2.5)
 )
 
 bottom = (
     bottom.workplane(offset=(box_height / 2) + 4.0)
-    .rect(box_length - 5.5, box_width - 5.5)
+    .rect(box_length - 6.5, box_width - 6.5)
     .vertices()
     .threadedHole(top_screw, 10, simple=screw_simple, fit="Close", counterSunk=False)
 )