diff --git a/openscad/foreign/sc808/fanholder-rear.scad b/openscad/foreign/sc808/fanholder-rear.scad
index 9a2764c..805c6a5 100644
--- a/openscad/foreign/sc808/fanholder-rear.scad
+++ b/openscad/foreign/sc808/fanholder-rear.scad
@@ -13,7 +13,7 @@ fan_block_w=fan_w*0.55;
 base_w=2*fan_w+2*mt+mt_center;
 base_d=fan_d+2*mt+2*nipple_offset;
 base_h=10;
-base_hole_dist=161.50;
+base_hole_dist=157.50;
 base_hole_dia=6.4;
 base_hole_sleeve_h=4;
 base_hole_sleeve_dia=base_hole_dia+1.5;
@@ -50,6 +50,15 @@ module sleeve(){
         cylinder(d=base_hole_dia,h=base_hole_sleeve_h+0.1,center=true);
     }
 }
+
+module sleeve6(){
+    $fn=6;
+    difference(){
+        cylinder(d=base_hole_sleeve_dia+2,h=base_hole_sleeve_h,center=true);
+        cylinder(d=base_hole_dia+2,h=base_hole_sleeve_h+0.1,center=true);
+    }
+}
+
 module tab(){
     difference(){
         hull(){
@@ -57,11 +66,11 @@ module tab(){
             translate([-base_w_tab,-base_hole_y_offset-mt,0])cylinder(r=base_hole_dia/2-1,h=mt,center=true);
             translate([-base_w_tab,+base_hole_y_offset+mt,0])cylinder(r=base_hole_dia/2-1,h=mt,center=true);
         }
-        translate([-base_hole_dist/2+base_w/2,base_hole_y_offset,0])#cylinder(d=base_hole_dia,h=mt+0.1,center=true);    
+        translate([-base_hole_dist/2+base_w/2,base_hole_y_offset,0])cylinder(d=base_hole_dia+2,h=mt+0.1,center=true,$fn=6);
         translate([-base_hole_dist/2+base_w/2,-base_hole_y_offset,0])cylinder(d=base_hole_dia,h=mt+0.1,center=true);    
     }
-    translate([-base_hole_dist/2+base_w/2,base_hole_y_offset,base_hole_sleeve_h/2-mt/2])sleeve();
-    translate([base_hole_dist/2+base_w/2,base_hole_y_offset,base_hole_sleeve_h/2-mt/2])sleeve();
+    translate([-base_hole_dist/2+base_w/2,base_hole_y_offset,base_hole_sleeve_h/2-mt/2])sleeve6();
+    translate([-base_hole_dist/2+base_w/2,-base_hole_y_offset,base_hole_sleeve_h/2-mt/2])sleeve();
     hull(){
         translate([-mt/2,0,0])cube([mt,mt,mt],center=true);
         translate([-mt/2,0,base_h-mt])cube([mt,mt,mt],center=true);
@@ -77,7 +86,7 @@ module hole_control(){
 translate([0,0,base_h/2])fanblock();
 
 translate([-base_w/2,0,mt/2])tab();
-rotate([0,0,180])translate([-base_w/2,0,mt/2])tab();
+rotate([0,0,180])translate([-base_w/2,0,mt/2])mirror([0,1,0])tab();
 
 
 //hole_control();
diff --git a/openscad/foreign/sc808/fanholder-rear.stl b/openscad/foreign/sc808/fanholder-rear.stl
index c0b7cf5..034a9c8 100644
Binary files a/openscad/foreign/sc808/fanholder-rear.stl and b/openscad/foreign/sc808/fanholder-rear.stl differ