Originally Posted by rc_square24

I just built the diff for my kit, I tightened it bit by bit and checking the spur slip in between. As it is tightened to the point where it is close to stop slipping, it starts to feel like there are spots tighter and spots looser when I turn the wheel in opposite directions. As it turns it feels like ....bump....bump....bump.... its not gritty or anything, it feels smooth.

I sanded the plates in circular motion with 600 wet/dry paper. The rest as the manual says.

Any idea why this is happening? Do i need to run it in by applying low voltage?

Thanks!