i keep having diff problemz i cant afford 100 a diff any suggestions for a replacement thats strong enough for a hobbywing xr8r scr esc with ezrun 4268 brushless motor i am thinking maybe a spool or in rear atleast i don't jump really i just gor the car and put rhe esc in it Nd now the diffs are both fone i haven't looked T the slipper yet but thRa next also