E-Revo differential gear problems
New to Rc cars. Purchased a used E-Revo and I'm having a problem with the differential gear. Installed a rebuild kit for it and ran it for about 10 minutes and heard the same clicking/slipping noise. Not sure what is making it grind the teeth so fast. Should I just purchase a new differential unit instead of a rebuild kit to make sure all parts are there. I installed gears as shown on diagram, but there may be some spacers or something missing of the original that I don't know about. I know that I shouldn't be stripping the gear that fast. Any advice is appreciated.