I picked up a nice Fenwick graphite flyrod at a yard sale. The botom part of the real seat including the butt is loose and I want to glue it back on. What type of glue should I use. It is a metal pc.

try epoxy that is what is for these kind of repaires. you might have to remove the fighing butt and force epoxy into the reelseat then reglue the fighting butt.