forgot to add:
if you use epoxy as a sealer, or a two part poly as the finish coat, remember, they are very durable, but if you do have to strip it for one reason or another, it won't be fun.
i have used products like dap alex plus exterior caulking for such applications with success. its highly flexible and take paint and varnish.I have some seams that have about a 1/8 space is there a filler that wont shrink and crack? Thanks bub147 Like most of us I have jumped to decision to regret it later. I am trying to learn from mistakes I would like to put something on that will stay on for a while and look good. Thanks for the feedback all !