[Shu]

We have AM Sonic Shifters on our robot this year and have also noticed significant differences side-to-side in gearbox friction causing the robot to veer in one direction. I have not looked for the bearing seats to be off-center but I found that one of the bearings in the same dog gear was not fully pressed in. This caused a binding due to lack of clearance between gears on the output shaft. Fully pressing the bearing in all the way fixed the problem.