I find that when ash builds up in and on the lip of the burn pot of my Harman Accentra insert the flame gets higher and seems lazier. I thus pull the ash forward and out several times a day. Am I being too anal? Doesn't seem to hurt leaving it alone overnight. Temp stays fine. Stove operates well. Holes are clear and I clean the underside weekly during the normal procedure. Pellets only produce a pan or so of ash per ton. Thoughts?