Before you even ride it, take the axle & driveshell out, and blast the crap out of it with GT85 - you wanna get rid of all the white lube that's in there. Use a new/clean toothbrush too to help. Then just go ride a few miles on it, plenty of up hills & down hills would be ideal. Then clean it out again with GT85/toothbrush, let as much drip out as you can, then put it back together & ride it. Works for me every time!