[Snowfire]

Originally Posted by RichardNixon

we are using vexpro single reduction gearboxes and there is a noticeable difference between the wheels when spun by hand.

We had that issue. It's probably is that you need to calibrate your motor controllers or the pinion gears/other gears are different teeth. VEXpro's 12 tooth and 13 tooth pinion gave the same pitch distance, so you might have a mix