new to on road i orderd a new xray t3 2011 spec with viper 17.5 and tekins rs could you tell me what would be a good pinion gear to start off with the kit comes with 84t 48p spur gear i will be runing on med size carpet track also what would be a good starting point for good size out door aspalt track just looking for a good starting point spur and pinion thans for the help