it wouldn't work. what is the problem? geared too high? or too low? if it is geared too low, you can get an upgrade from hpi that turns the flux tranny from being locked in 1st gear to being locked in 2nd gear.
http://www.hpiracing.com/products/en/102244/
They say a good mechanic only needs 2 tools - WD40 & Duct tape. If it moves, and its not supposed to, duct tape. If it doesn't move, and its supposed to, WD40.