diff --git a/3d/winche/winche.scad b/3d/winche/winche.scad
index 21a2c7a..a45036d 100644
--- a/3d/winche/winche.scad
+++ b/3d/winche/winche.scad
@@ -21,8 +21,9 @@ motor_shaft_offCenter = 6;
 motor_mount_sep = 31;
 
 side_width = 50;
+side_thickness = 5;
 side_arch_r = 21;
-side_arch_center_h = roller_above_base - 7;
+side_arch_center_h = roller_above_base - 10;
 side_mount_hole_sep = 35;
 side_mount_hole_above_base = 1;
 side_mount_hole_d = 4;
@@ -112,9 +113,9 @@ module side_bearing_2d() {
 	difference() {
 		side_2d();
 		translate([matt_thingness+side_width/2, base_hight+roller_above_base])
-			circle(r = side_bearing_od);
+			circle(d = side_bearing_od);
 		translate([matt_thingness+base_len/2+side_width/2, base_hight+roller_above_base])
-			circle(r = side_bearing_od);
+			circle(d = side_bearing_od);
 	}
 }
 
@@ -162,9 +163,9 @@ module mid_3d() {
 			// nibs over side
 			winch_side_a_ratio = side_flat_trangentPoint_x / side_flat_trangentPoint_y;
 			windh_side_mattThinkness_x = winch_side_a_ratio * matt_thingness;
-			translate([0, base_width+matt_thingness, base_hight])
+			translate([0, base_width+side_thickness, base_hight])
 			rotate([90, 0, 0])
-			linear_extrude(base_width+matt_thingness*2) {
+			linear_extrude(base_width+side_thickness*2) {
 				polygon(points = [
 					[0, 0],
 					[matt_thingness-mid_winch_tollerance, 0],
@@ -216,26 +217,35 @@ module mid_3d() {
 module side_right() {
 	translate([0, -0.0001, -0.0001])
 	rotate([90, 0, 0])
-	linear_extrude(matt_thingness)
+	linear_extrude(side_thickness)
 		side_motor_2d();
 }
 
 module side_left() {
-	translate([0, base_width+matt_thingness+0.0001, -0.0001])
+	translate([0, base_width+side_thickness+0.0001, -0.0001])
 	rotate([90, 0, 0])
-	linear_extrude(matt_thingness)
+	linear_extrude(side_thickness)
 		side_bearing_2d();
 }
 
 module roller_3d() {
-	union() {
-		rotate([-90, 0, 0])
+	rotate([-90, 0, 0])
+	difference() {
+		union() {
 			cylinder(d = roller_small_d, h = base_width - roller_side_tollerance*2);
-		rotate([-90, 0, 0])
-			cylinder(d = roller_flansh_d, h = roller_flansh_t);
-		translate([0, base_width - roller_side_tollerance*2-roller_flansh_t])
-		rotate([-90, 0, 0])
 			cylinder(d = roller_flansh_d, h = roller_flansh_t);
+			translate([0, 0, base_width - roller_side_tollerance*2-roller_flansh_t])
+				cylinder(d = roller_flansh_d, h = roller_flansh_t);
+			translate([0, 0, base_width - roller_side_tollerance*2])
+				cylinder(d = 6, h = roller_side_tollerance);
+		}
+		translate([0, 0, base_width-6.7 - roller_side_tollerance*2])
+		scale([1, 1, 2]) 
+			heatSetInsert_hole_M3x5_7();
+		intersection() {
+			cylinder(h = 6, d = 5);
+			cube([10, 3, 6], true);
+		}
 	}
 }