My Harman Accentra insert has been burning real low in the burnpot, and I have been getting a lazy flame as soon as the ash piles up covering all the burnpot holes. It seems to be putting out good heat as long as I pull the ash off the burnpot holes. It has been like this all season. I did a full cleaning including the flue and combustion fan at the end of last season, and have been cleaning out the front (everything that I can without pulling it out). once a week all season. I did not pull the ESP probe at the end of the season last year. I just reached in and wiped it off. Could the lazy flame issue I have been having be the ESP probe, or could it be my combustion fan (which has been a little louder this year).