I think I read a while back in this thread a suggestion to use a thrust bearing and I think it was to replace something in the diff?
Was it this thrust bearing?
http://www.tqrcracing.com/shop/produ...yword=&pg_no=1
And was it used to replace the two "disk springs" BA20 or part #19805489
oR Maybe it was to replace a bearing in the diff- not sure?