Ok, answer guys this is an easy one, and possibly I've already asked and forgotten the answers so bear with me. On some kayaks my varnish job stays attached to the epoxy just fine and on others I can peel of little pieces where the hull is scratched. I'm guessing there's something between the varnish and epoxy that is interfering with adhesion but would like others opinion. All of this is with MAS and captains varnish in both good and bad adhesion. Curious what are the constants you guys stick with or have identified and solved this problem.