Originally Posted by init4fun

This seems to be the #1 problem with ARFs , not enough glue used to properly hold things together . Add that to an engine that vibrates more , and yea , a pulled away firewall isn't out of the question .

When you said you "really slathered the epoxy on" there were two mistakes made . #1 being that any more than can soak into the wood before it cures is just excess weight without all that much increase in strength , and , #2 since epoxy was being used , a bit of fiberglass cloth laid into the epoxy in critical spots would have increased the strength far more than any amount of excess epoxy without cloth would have ....