Last winter the pellet stove burned out 3 ignitors on me and after the third one I just lit it manually for the last bit of winter. Any idea why it keeps burning them out and what the recommended fix is? This one was made in Sept 2006. The ignitor seems to stay on longer than necessary. I also have it set to burn corn because that's the only way I can get it to feed the pellets at the right speed. I use what I believe should be higher quality hardwood pellets and when I don't have it set to corn it feeds the pellets far faster than they can burn until eventually the firepot is overflowing and they get backed up in the chute until the auger jams. Lastly if it isn't too much trouble, part numbers forbwhayever if need to replace along with the proper ignitor part number would be greatly appreciated. Thank you in advance.