The lump port modification involves permanent alterations to the head. Now they must be reused. The epoxy was probably there just to temporarily hold the lump in place while the short head bolt was installed. The bolt actually secures the lump once it's installed- - - -no adhesive needed. What part of the lump is hitting the valve, and how much trimming would be required to get it to slip by the valve stem? You have a race-type modification to what is probably going to be a street engine, so you're pretty much a victim of the other guy's mistakes now.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!