We've got an '88 Coleman Laramie and I'm wondering if anyone has ever put a (somewhat) permanent cover over their furnace exhaust. First, the furnace is not being used and I'd like to remove it entirely to gain some storage. But, I'd also like to have the option of putting it back in when I need it. I'd like to remove the exhaust cover from the outside and put a solid piece of something over it. Anyone do anything like this to their PUP?