Back to Index 3. I have changed the pad four or five times and the machine still vibrate. All we can say is that you have to keep trying until you get a good pad. Pads are not a precision instrument where as the machine is. Check with your pad supplier.
Some manufacturers make better pads than others.
If nothing works, try another brand. Back to Index 4. We strongly discourage you from turning the pad over after it has been used. The reason is that when the pad is used for some time, the centerhole becomes larger. Thus increasing the size of the pad.