Found a way to upgrade the stump jumper motors. Wondering how we go about figuring out if we need to turn bigger props to get the most performance gains

Get a tinytach... That will let you know RPMs youre running... If it is excessive and youre bumping the gov trying increasing prop size and pitch until you can still push 3600-3900 RPMs... I would think companies would throw a tach on as stock... would save consumers alot of headaches...