diff --git a/camera_side_mount.scad b/camera_side_mount.scad
index cfc64b0..d45f95c 100644
--- a/camera_side_mount.scad
+++ b/camera_side_mount.scad
@@ -3,13 +3,15 @@
 // 24mm width faces front when assembled
 
 // RENDER MODE - Change this to switch between views
-render_mode = "assembly"; // Options: "assembly" or "flat"
 render_mode = "flat"; // Options: "assembly" or "flat"
 
+// ASSEMBLY ADJUSTMENT - Manual Z position offset for camera inserts
+insert_z_offset = 15;   // mm - adjust vertical position of camera inserts (positive = higher)
+
 // Parameters - Camera hole spacing: rotated 90° CW
 hole_spacing_x = 25;   // mm (horizontal distance between hole centers)
 hole_spacing_y = 24;   // mm (vertical distance between hole centers)
-bottom_hole_clearance = 4; // mm (clearance from base plate to bottom hole center when standing)
+bottom_hole_clearance = 3; // mm (clearance from base plate to bottom hole center when standing)
 hole_edge_margin_x = 3;    // mm (side margin)
 hole_edge_margin_y = bottom_hole_clearance; // mm (bottom margin = bottom clearance)
 mount_width = hole_spacing_x + 2 * hole_edge_margin_x;   // 31mm total width
@@ -24,13 +26,14 @@ tripod_hole_diameter = 6.35; // mm (1/4" standard tripod screw, radius=3.175mm)
 
 // Notch parameters for joining - wider for better rigidity and alignment
 notch_width = 12;      // mm width of the notch/slot (wider for stability)
-notch_depth = 8;       // mm depth of the slot in base plate
+notch_depth = 3;       // mm depth of the slot in base plate
 tab_height = notch_depth; // Height of the tab on insert
 
 // Total dimensions
 mount_area_width = mount_width * 2 + spacing;
 total_width = mount_area_width + left_margin + padding; // Left margin + right padding
-total_height = mount_height + 2 * padding;
+// Height should fit standing inserts (mount_width when rotated) with padding
+total_height = mount_width + 2 * padding; // Standing insert is mount_width tall in Y direction
 
 // Base plate module with tripod hole and slots for inserts
 module base_plate() {
@@ -42,13 +45,13 @@ module base_plate() {
         translate([left_margin, total_height / 2, -0.5])
             cylinder(h = base_thickness + 1, d = tripod_hole_diameter, $fn = 30);
         
-        // Slot for first insert (offset from left by left_margin)
-        translate([left_margin + mount_width/2 - notch_width/2, padding - notch_depth, -0.5])
-            cube([notch_width, notch_depth + 0.1, base_thickness + 1]);
+        // Slots for inserts - must match material_thickness when insert is rotated
+        // Centered on Y axis, sized to fit the 3mm thick insert tab perfectly
+        translate([left_margin + mount_width/2 - material_thickness/2, total_height/2 - notch_width/2, -0.5])
+            cube([material_thickness, notch_width, base_thickness + 1]);
         
-        // Slot for second insert (right position)
-        translate([left_margin + mount_width + spacing + mount_width/2 - notch_width/2, padding - notch_depth, -0.5])
-            cube([notch_width, notch_depth + 0.1, base_thickness + 1]);
+        translate([left_margin + mount_width + spacing + mount_width/2 - material_thickness/2, total_height/2 - notch_width/2, -0.5])
+            cube([material_thickness, notch_width, base_thickness + 1]);
     }
 }
 
@@ -88,14 +91,16 @@ module complete_assembly() {
     // Base plate
     base_plate();
     
-    // First camera mount insert (left) - standing vertically, 24mm faces front
-    translate([left_margin + mount_width/2 - material_thickness/2, padding, base_thickness])
+    // First camera mount insert (left) - sits flush on base plate, centered on Y
+    translate([left_margin + mount_width/2, total_height/2, base_thickness + insert_z_offset])
         rotate([90, 0, 90])
+        translate([-mount_width/2, -mount_width/2, -material_thickness/2])
         camera_mount_insert();
     
-    // Second camera mount insert (right) - standing vertically, 24mm faces front
-    translate([left_margin + mount_width + spacing + mount_width/2 - material_thickness/2, padding, base_thickness])
+    // Second camera mount insert (right) - sits flush on base plate, centered on Y
+    translate([left_margin + mount_width + spacing + mount_width/2, total_height/2, base_thickness + insert_z_offset])
         rotate([90, 0, 90])
+        translate([-mount_width/2, -mount_width/2, -material_thickness/2])
         camera_mount_insert();
 }