I just got my pc 7424 in today and I have a question...the little o- ring that comes with the pc that is in the package with the wrench do i use this. Im using the sonus pads, im probably being anal just want to make sure before I start.
It's mentioned in the manual. Says you can put it on the shaft of the backing plate so it has no interference with countweight or screws. I did not need it.
