Originally Posted by nismoflip
can i substitute the evolva's 9mm ball screw (FM337) with mugen mrx-3/mrx-4 pivot balls? i don't know if they are the same. the LHS said they had some mugen pivot balls in stock. is there something out there better than the stock steel pivot balls for the evolva?
You shouldn't be having a problem with the stock pivot balls. Do you need a set?
Rich