Tonight I removed a Weber Sig 12 from my tweed Deluxe clone and installed a Weber Blue Dog. I didn't have much clearance between the end of the bell cover on the Sig and the 6V6 adjacent to it (probably 3/16"). Now, since installing the Blue Dog, I've discovered that there's no clearance between its bell cover and the tube. Is this gonna create a problem with the hot tube touching the cover? Can the cover be removed if need be?