hello guys first time here im a current owner of a hellfire wich i bought used i went from a nitro sport to a hellfire my nitro sport had all types of hop ups at this time im thinking of changing my hellfire even thought i love how the truggy rides but it has given me so many headache the pins on the diferential keep coming out and i get a grinding noise ill be lucky if i get 3 tanks out of it .
does anybodie know about a upgrade for the diff or whats the trick so the pins woudlnt come out please help ????????????????????