ok i have a savage x with a picco/werks .27 in it with the hpi ribbed pipe...after about 2 months of playing with it..the diff in the rear finnaly shatterd like i was told it would..now i need yalls help on what aftermarket parts to get..diff cup,gears,diff oil..and do i need to replace the front diff also..cause the front is barley on the ground..please help