Just built my Sc10 4x4 FT Kit. Have a question about the diffs. In the instruction manual it illustrates a shim be placed on the outdrive side of the diff case. There was also a print out included in the plastic bag containing the diff parts. The print out does not show use of this shim. When I assembled the diff there was not enough room for the shim. It caused the outdrive to bind up against the case and wouldnt spin free. I assembled the diffs without the shims and it seems to fit perfect.

Did I do this wrong? Should I go back after a track day or two and see if I can fit the shim? Or is it not needed?