Hello all. Just finished my first brew day (Caribou Slobber) with the Deluxe Starter Kit from Northern Brewer. All went well and I hit my O.G. spot on, but I’m wondering why the carboy bung isn’t staying on as it should. Maybe it’s still moist from the star san, but it keeps popping up to where it’s pretty lose. I don’t want to let it sit for two weeks like that. Any info would be appreciated!