Wellnuts are not the best way to do this... the proper way to do it is to use nutserts to permanently install two threaded inserts into the roof. If you are in the Milwaukee / Chicago area, I'd be happy to help.
A nutsert works sort of like a rivet, but is hollow and threaded. They are cheap, just need the proper tool to install them.
The new owner of RLS is Austin, you can contact him at: Austin0Barrett <<<< @ >>>> gmail <<<< dot >>>> com