I was recently advised to check the 4 bolts that hold my Penguin a/c to the roof just to make sure that they were secure and the gasket sufficiently compressed. So I did. Well, there were 2 bolts up front, none in the rear and no gasket. It was held in place with sikaflex or whatever the factory was using at the time. Is that possible from JC? It's a 2007 model sold to the original owners in 2008 and purchased by me 1 year later. So it's possible that it was replaced under warranty somewhere else. Anyway, I don't need to remove it now but someday I might. Can anyone recommend the best explosive material for the job?