watch out with denatured alcohol... that porosity thing I mentioned above... gets worse as the water content increases. Not all rubbing alcohol is equal.

Also... rubbing alcohol can turn the epoxy rubbery. If that happens... you CERTAINLY have no strength from the epoxy (not as big a deal for fuelproofing as other places...) and... the epoxy can just peel free of the wood with no warning. (Then it definitely isn't helping fuelproof anything.)

Messing with the chemistry of epoxy just isn't worth the headaches it can cause... Yes some people get great results. I have TRIED the alcohol... and followed the directions given by the experts on doing that EXACTLY... and ended up with a goo that never set up.