Thanks for taking the time to write down a bunch of info for me! :-) I'll try giving your contact in the twin cities a call.
Actually, I did literally mean reusable (not removable). It's a semi-hard paste-like loctite product that I know exists because I've used it. However, I say Loctite's website is nearly useless because I cannot readily locate this reusable product. To be fair (to loctite), I suppose it's possible that the product I'm thinking of is made by one of loctite's competitors such as Permatex.