Here's a step by step write up on how to R&R them w/ a permanent solution using nutserts as Toolpants notes. Takes about 1.5-2hours to do once you have what's needed.
http://mike.focke.googlepages.com/randrcenternuts
Aside from the web pages, there's a pdf link at the bottom that has more extensive pictures/arrows/details.
Go to it!
