hello again no i run battery is tornado rc 6500mah 14.8v 4S 90c
it not 6s all motor and body is factory notting upgrade all shock...
only upgrade serv steering because other old ser steering is broken.
if you have any idea to fixing of inner gear? i hate to return problem again,
or is there have upgrading diff gear centre any strong? i ask.
thankyou for your time.