Just my two cents worth but I have started to use Loon Hard Head in lieu of epoxy in a lot of my applications. This is especially true for the shell backs on my shrimp and crayfish. Takes two coats but then you do not have the problems that you have with epoxy.

Just some food for thought.

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Joe Branham
http://www.branhamssaltwaterflytying.com
flytyer@branhamssaltwaterflytying.com
"The only stupid question is the one for which you do not seek an answer."