I have a used one. I’m out of new. Definitely could use a new o ring. I’ve looked high and low for years and can’t find them anymore. But this is the last 9b I have.
I’ve tried hairspray. It helps but I have a little lift in the corners. I’ll try the smooth part of the pei bed and hairspray. See what happens.
I’ll try hairspray on the tape also.