Need help with Flex backing plate

Hey guys, while polishing up my truck with my flex da, the backing plate started shedding on me... i called flex and they were very helpful and actually sent me a new backing plate that was here in like 3 days! :applause:

But anywho, on to my question....the gentleman at flex said to use motor oil to grease things before putting the new backing plate on, and to be completely honest im not even sure where to start....what size ratchet have you guys used to take the backing plate off? What do i grease and where does the felt ring mix into the equation (separate from the backing plate)......any help would be appreciated guys, thanks!

 

All you need to get the backing plate off is an allen wrench. You will see the felt ring on the backside of the bp where the outer ring of the polisher meets the bp.

 

I believe the allen wrench is in the original box.