pro ball diff help!!!!!!

[350oshin]

ok i got the proball diff and its perfect to say the least it makes a huge difference with my mamba 7700 but i keep going through the main gear were the diff balls go since its plastic. i know the factory diff has the metal gears...i need help finding a metal gear so i cant chew it up.

[Rob #28]

If your tearing it up, the diff is probably too loose, or your slipper is too tight. No reason to go through them. ae, Losi, all of them run plastic diff gears and they all hold up to gobs of power.