Greetings Newbie to forums here. I've had my P61a for 3 years now. I try to maintain the dickens out of it. Gets a yearly cleaning once a month. Help me out with a few questions. (note stove is vented with proper pipe to a cleanout tee up 7 feet to 90 and out through a 3 ft pipe which passes through the cold air intake thimble. In basement of cape cod home heating basement and main floor with it. How often should I change the ESP? Seems I have to do it yearly. It is always kept clean but often I get Really poor performance, that seems to fix it. Normal setting for feed rate - I see people here at 4, I'm generally around 2 Current issue- TONS of ash, decent flame but low heat. (full clean out last Saturday). Settings Room temp maxed Feed rate 1.75+- Stove temp maxed Pellets are from local mill in Holland MI Supposedly hardwood blend. Dealer has sold them for two years, always a little ashy but not like this and lots more heat. Thanks bunches!