Hi Everyone, I did something stupid and unscrewed the muffler (filter) in the hopper and now I can't get it back into the hole. The dealer came out and said that he couldn't fix it without taking the whole stove apart, which would be about a 4-5 hour job. He said to just put a piece of duct tape over the hole and that the stove would run fine with no loss of efficiency, and there would be no safety issue. Is this true? What do you guys think--do you need this muffler piece for the stove to run OK? Thanks for your help.