Alan,
For your Pro squeeky back cover, your diagnosis was exactly right. You might want to try this "Scotch Tape" fix that works on the Centro (pics on p. 2 of the thread).
Thanks for the link. I'll have to try that "fix" out before the next podcast so i can report on it. That reminds me, I'll have to send the Treo Pro back soon. =( While it isn't a webOS or even Palm OS phone, it is still cool.