5200 will not be used in my repair for the exact reason you stated
I THINK west systems G/flex will be the sealant of choice but I will have to check with Catman for input. He has successfully removed and re-attached several Mystere decks at his shop over the past few years. My pics above are from a friends mystere at his shop

Originally Posted by waterbug_wpb
When replacing the deck, would you want to use something less aggressive then 3M 5200 in case you have to remove it again?