RS4Pro2GT

I have an RS4 Pro 2.. How can i check to see if the differential is bad? When I drive it I like to powerslide or drift it alot and I have the HPI Stage D tires.. Sometime when the car does a 180 the car stops and the wheels struggle to turn like diff is free spinning... The car pushes big time in some turns and i hear a little clicking.. Is this a bad diff ? Or does my motor not have enough power to keep the wheels moving after a 180? Or is the chasis/ Diff designed to stop power to the wheels after a quick 180 type spin? The motor I have a a 27 turn P2K Trinity with SMC energ 4600 batts...

RFALLON

Have you tried rebuilding it? and if not make sure when you rebuild it if your holding both things the dog-bones go in (idk what they're called) the gear cant turn.