im sure I have seen diff rings available
if not sand with wet and dry abrasive(use wet) start around 300 grit till wear grooves disappear the gradually go finer till end up with 1200
I have just got some ceramic diffballs from hing wong ching land to trial cheaply and rc bearings do thrust race kits for losi in imperiall sizes (I got some for my xxx tourer
I have 3 losi xx and 3 xx4 to check and refurb diffs ill keep you posted of progress !!
|