micro_doc

I have a Fury with the thrust washers in the diiff warped..one looks like a top hat it's so distorted...I have read the posts about using the sc10 diff washers..I tried that but the washer are .5mm and seem way to tight..i can hardly turn the outdrives with those washers in...Is there something i'm missing ???
In the mean time I put an sc10 diff in place of the arrma ..fits really well ..just need some shims behind the bearings as this diff is a little narrower..But i would like to fix the Arrma diff . Any help would be appreciated