Re: Bedding kits?
There are more threads on here about bedding than probably any other subject, for details, search.
Kit not neccesary
Filler for action voids, screw holes etc: modeling clay.
Release agent: Johnsons paste wax, nuetral kiwi shoe polish, or just about any other quality wax you can apply a film of, including products marketed as mold release agents.
Bedding material: Devcon steel, or ti are popular, as is marinetex. Any high quality, hard but not brittle epoxy with a decent working time, that is thick enough to stay where applied, and will not wick moisture once cured should do. Accra-glass, brownells and other products marketed specifically for it are ok as well, but many feel not the best.