I've had my Harman Accentra pellet insert for about 5 years now.While I've been able to deal with just about every problem I've had this perplexes me: No matter what, I have never been able to get the recommended one inch of ash on the lip of the firepot. There is always more, sometimes up to two inches. This doesn't bother me except that when ash builds up this much the flame seems to get a bit lazy. I've tried lots of different settings and lots of different pelletts. Nothing seems to make a difference. Anybody have any suggestions?