Orpheus,
This thread might be of some help to you. It is possible that with time dirt and dust particles made their way into the motor causing the noise you're describing. Or you might have put too much oil into the motor. The question is whether whatever is causing the noise affects the speed stability. If it does, you might want to consider a new motor.
This thread might be of some help to you. It is possible that with time dirt and dust particles made their way into the motor causing the noise you're describing. Or you might have put too much oil into the motor. The question is whether whatever is causing the noise affects the speed stability. If it does, you might want to consider a new motor.