Welcome to H-M.
Have you tried running the motor without the pulley? If it's worse with the belt on, it's possible the pulley was bored off center causing an imbalance and wobble, which could also show up worse when the belts on.
It would also give you the option of trying to find a new pulley vs new motor, if you can't get the vendors to setup.
If it still vibrates without the pulley, then unfortunately it would point to the motor.
Have you tried running the motor without the pulley? If it's worse with the belt on, it's possible the pulley was bored off center causing an imbalance and wobble, which could also show up worse when the belts on.
It would also give you the option of trying to find a new pulley vs new motor, if you can't get the vendors to setup.
If it still vibrates without the pulley, then unfortunately it would point to the motor.
Last edited: