hey everyone I am brandy new here but I was using this site a couple times on older posts. I still have not figured this noise out its driving me nuts! I have a Breckwell big E with the small viewing wondow, there is no air intake kit on it, the piping goes straight out at same level as exit on stove about 2 1/2 feet through exterior wall and then 90 degrees up for about 3 1/2 feet the off set again another 2 ft around roof so basically in a z shape, convection fan has been replaced to new number, all bolts have been tightened, auger motor removed cleaned lubed etc, auger shaft also removed and all cleaned, hopper also all cleaned no debris. I am however using currently cheap pellets BUT i bought 5 different brands from hardwood, softwood, mix, longer, shorter you name it. Noise still present in all some make noise less then others. The pellets I am getting noise from a lot are labeled on bag are up to 1.5 inches in length. The stove i understand does not like them that long however as stated it does this even with better brands with shorter pellets. The noise FINALLy! It sounds like a BaNG Not consistant cannot time it etc. only guesses i can have is auger is getting jammed on the occational longer pellets in all brands or maybe there is some piece of metal that is warped or something that when heated or cooled it pops. It is loud as loud can be. So loud I cant believe something has not broken. It will make you jump out of bed. Happens pretty often maybe every 4-10 minutes. Please help!