When I cleaned our Breckwell Big E this evening I had the door open and pulled the lever that cleans the ash from around the heat exchange tubes. 4-5 wood pellets fell down from around them. I noticed a time or two that its had a funny click here or there when its operating. I've also noticed 8-10 pellets in the ash box everytime I clean it for the last week or so. I'm now assuming they are falling from above the heat exchange tubes and landing in the ash boxes. How is this happening? It seems stray pellets are getting to a part of a stove they shouldn't get to. Does anyone have some advice on what to do for this problem?