Originally Posted by Daniel W

Hey AreCee

I had the same problem with the CRC 16 ball (3/32") spur gear.

Looking at the Spur Gear you`ll notice that its thinner than a standard (1/8") style Spur Gear so the whole diff setup is lower on the axle shaft.

When building the diff up build it normally(I use a non flanged being on the spur gear face)including the thrust cone minus the washer and you can see the top of the carbon axle flush with the top of the cone not allowing anoth clearance for the washer and nut to tighten the diff together.

My solution which is the same as the last post is to add a 1mm (1/4") axle shim over the outer bearing then the thrust cone and nut then it should be smooth as silk