So its at a 10T now? and going to a 9T means it will turn faster.........? ya, faster at a smaller gear set.

I know lipo tends to draw more mostly on brushed motors. I think the rule generaly is lipo=brushed nimh=brushed or as a general rule in my mind.......whoops getting into the 70's again..lol

So a motor turning faster runs cooler because its not working as hard?

I just checked, and the manual does offer a 8T 9T and a 10T pinion gear.
So if you change the pinion, do you have to change the spur gear like we do for the electric trucks?