[The_Drive_DR]

We are building the kitbot drivetrain and chassis. The right side is aligned perfectly and is pretty quiet but the left side squeaks a lot. It sounds terrible. We have tried taking the left side apart and re-aligning the bearings greased the gearboxes and stuff of that nature, but nothing really helps. The noise was a little better after we greased the gearboxes but it returned a day later. Any thoughts?