Thanks for the reply. I haven't had their number but I did email their sales and support but never got a reply.. I have tried several different pinion gears all with different slug screws but doesn't seem to make a difference. I did order an original pinion gear that comes with that model but I don't know if it has a 5mm or 7mm shaft on it. My new motor I got for it has a 7mm shaft.
wow, big motor.
Im 90% sure it had a 5mm shaft. I cant imagine it had a 7mm, as 5mm is common amount 1/8 scales (the shredder is based off the 8e line)
You will likely need a different gear the same pitch but diff size bore.
I usually get prompt responces to emails sent to that address, but calling gets me the needed answer 95% of the time.
the parts search shows a 15t, 3mm bore pinion gear, but im not sure thats correct. I coudl sware the stock motor had a 5mm shaft.