I just bought a brushed Rustler 4x4 and am having trouble finding gearing options. VXL info is all over but not for brushed... I know stock is 10t 32p pinion and 54t 32p spur but its tad on the slow side. Was hoping someone may have a better gearing option for better acceleration & speed. I mostly drive on hard dirt/sand infields and streets... Any help would greatly appreciated!!