Advice on diffs and diff cups

[maxxdude1234]

Originally posted by tomato
My concern about the F L diff cups was, I had read a post about some manufacturing process that needed some attention. They (the purchaser) had said he needed to grind the shaft down to get it to fit properly. I wish I knew where the post was. I went looking for it but, I didn't find it. I didn't want to do any modifications to them.

heh, that post was me. It was no real problem to sort it out - just a nuisance. http://www.rc-monster.com/forum/show...=&threadid=668

To back up what Rcbros said. An ordinary hand file will NOT work. The spider gear shaft is made of hardened stainless steel, hand files are high carbon steel and are not up to the task. I had to use an aluminium oxide grinding wheel (dremel)

If your still unsure, go with the maximizer ones. They are 20$ more, but don't have this problem.