Oh boy, I got my 8xl today (thanks Mike)! Man it's heavy for such a small thing. Anyway, I read around the forums and covered the rear bearing with tape as instructed.
Brian, how did you cover the rear bearing with tape? Can you please post the link?
Well, I don't have the link anymore. I did a search and stumbled across it actually. But taping it is easy. Just cut a piece of tape large enough to cover the bearing hole and, well, cover it. :) I used some 1" wide electrical tape I had laying around. The RCM heatsink clamp helps to hold it in place.