Yo so ive been playing with my amp upgrading to brushless and just put in metal gears since my plastic ones stripped. But anyways when i put new tires on it, it was awesome until I stripped the plastic gears. i put in the New metal gears but it lags.. at first it would make my spur get stripped so I messed with the gear mesh then it got to a point my esc caught fire . After a few tweeks now it just makes my spur gear really hot . (BTW the new gears when I put the cover on with bolts it forces itself a bit . Or if i put them on i have to really loosen the spur to have it move on the ground but then it stripped. It was running fine a couple of weeks ago but idk what now please help