I recently purchased a PowerRoll on eBay.  Worked great for awhile,
but now is having a few problems which I suspect are sticking valves.
As repairs under the warranty are obviously doubtful, I am going to
dive into it myself.

Has anyone else who has worked on their own unit jotted down any
do's and don'ts (especially the don'ts) regarding these units, or
instructions for servicing them?

Best regards,

Pete Lazo
Norfolk, VA