Yes i am running the BP Gears too... Definitely cant beat them for strength.
I am going to look into the kyosho diff cup... i really like the idea of the 8x16 bearing which continues to fail on me! Are you using the stock savage spider gears and sliding blocks with it?
I was going to buy these internal gears
http://cgi.ebay.co.uk/ws/eBayISAPI.d...T#ht_500wt_764
These gears are meant to be a little thicker and stronger than the stock savage internals... Do you think they would work?
Thanks for the help bud
edit..
is this the diff case that uses the 8x16 bearing and has the steel ring around it?
http://cgi.ebay.co.uk/KYOSHO-IF103-I...#ht_1073wt_750