What do you do to keep your smoker in good order. Mine has a lot of creasote build up and is hard to open some times once it has cooled down. Also should you treat the leather on the bellows to prolong its life? I was using corn cobs for smoker fuel but recently have switched to baling twine. Is the build up of creasote a potental fire hazard, I've seen the after math of chimmney fires. Any advice would be appreciated.