diff --git a/box.scad b/box.scad
index cdc31f9..b46db20 100644
--- a/box.scad
+++ b/box.scad
@@ -157,17 +157,19 @@ module hinge(theta=90, show=true) {
 
 module rearMount(md=141.333, theta=90, show=true) {
 	x=7;
-	py=20;
+	py=30;
 	d = .4 / sqrt(2);
 	zspread(n=2, l=md) difference() {
-		left(x/2)cuboid([x,20+2*d,50], fillet=2, edges=EDGES_X_ALL);
-		hinge_mount($die=true);
+		left(x/2)cuboid([x,20+2*d,50], fillet=2, edges=EDGES_X_ALL+EDGES_Y_RT+EDGES_Z_RT);
+		left(x)xflip()hinge_mount($die=true);
 	}
 	left(5+d)back(13+py/2 + 5+2*d)zrot(theta){
-		zrot(-theta)zspread(n=2, l=md+25+25/2 ) {
-			right(5.3)fwd(9/4+6)cuboid([x,2*d+1+9/2+20,25/2], align=V_LEFT);
+		zrot(-theta)zspread(n=2, l=md+25+25/2 ) hull() {
+			right(5.3)fwd(5+py/2)cuboid([x,2*d+1+9/2+20,25/2], fillet=2,  align=V_LEFT, edges=EDGES_Y_RT);
+			right(2*4.5+2*d)#cyl(fillet=2, r=6, h=25/2);
+			right(4.75/2+2*d)#cyl(fillet=2, r=4.75, h=25/2);
 		}
-		fwd(5+2*d)cyl(r=4.75, h=md+50);
+		fwd(2*4.5+2*d)cyl(r=4.75, fillet=2, h=md+50);
 	}
 }
 
@@ -489,9 +491,13 @@ if (PART == "new_joiner") {
 if (PART == "grid_mount") {
 	difference() {
 		union() {
-			fwd(19.799/2)cuboid([48,6+19.799,1]);
-			fwd(19.799)xrot(-45) cuboid([84,6,25], align=V_TOP);
+			fwd(19.799/2)cuboid([48,6+19.799,2], fillet=1, align=V_TOP);
+			up(1)fwd(3.4+19.799)xrot(-45) cuboid([10+84,6,25], fillet=1, align=V_TOP+V_BACK);
 		}
-		xspread(n=2, l=42) cyl(d=3.2, h=5);
+		
+		cuboid([200,200,10], align=V_BOTTOM);
+		xspread(n=2, l=42) cyl(d=3.3, h=50);
+		xrot(45)up(17.2)xspread(n=2, l=84)m3s_clear(bl=10,bz=-9, sh=0, drop=false, $die=true);
+
 	}
 }