How many posts are you going to make about this car?
I think others already warned in another thread about your wheel/tire choice.
The Jato has a very flimsy chassis, so the gear mesh between the clutch bell and the spur gear is always changing. I am sure the ridiculously large tires you put on the car made this several times worse. My friend's Jato flexes the chassis when hit the brakes, if you watch carefully. If your motor was loose, that also probably wore the gear down prematurely.