Lets say you were going to compensate for a minor diameter difference when seating a beam (like OD of the beam 4inches and mounting onto a fraction of a tube - flipped inside out with an ID of 3.75 inches) and you were going to use epoxy to make up the difference.
Would you use just straight west system epoxy?
Would you use structural filler (high density 404)? Other filler?
Chopped glass/chopped glass matte?

p.s. forgive me for posting something having to do with sailing... or working on cats.... mea cupla <img src="http://www.catsailor.com/forums/images/graemlins/laugh.gif" alt="" />

PPS.. I just reread Jake's Teamseacats.com blog and saw how he did it last year prior to the Tybee. Jake... what was the type of mold release you used? where did you get it? And how do you not get epoxy into the bolt holes? When you tighten down the bolts don't you epoxy the bolts into the nuts?