Okay, I managed to get it off with a sharp putty knife.
Last question: I think I’m going to upgrade the dipstick to a Lokar flexible dipstick while I’m going through the trouble to fixing the gasket.
Is it worth doing the mod to the flange to get it to accept a thread-in dipstick or does the press-in dipstick work perfectly fine?
Has anyone had issues with the aftermarket press-in dipsticks leaking oil?