I have an Avalon insert in a zero clearance (I think) fireplace. The Avalon has a 6 inch pipe that goes at a 45 degree angle and then up into my 8 inch stainless steel pipe. The guy who installed it sealed off the difference with a plate. I was up on the roof today and took off the chimney cap to clean and rebuild it and shinned the flashlight down the pipe and noticed that there was some "stuff" (leafs, debris, etc.) around the plate that took up the space between the 6 inch and 8 inch pipe. I assume (and you all know what that means) that I need to get that out of there some how. Does anyone have any suggestions on how to clean that part of the pipe junction???? And, how do I prevent this in the future??? Thanks in advance
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