Hello,
I swapped out all the bearings in my 2650 and 2200 for ceramics from Boca. The rear cover does come off, but when I did the epoxy pulled off some electrical tape that is wrapped around the wires coming out of the motor. I easily added some new insluation (shoe goo) and off I went.
Motor is very smooth, and very cool.
I used these from boca.
http://www.bocabearings.com/main1.as...MR625C-YUU_NB2
I will post pics tonight