I have been running my 500 for about a month now. Burning mostly maple and ash split last march. Running stove 500 to 550 stove top temp as much as I can. Seems like this stove produces a huge coal bed, maybe 4 to 6 inches deep. Buries the air intake enough sometimes I have to take a poker to dig down to it to free it up . I run my stove wide open until I get into the high 400's then shut it down about 70%-80% the stove revs up to 500-600. I have had coals still red in the ash 18 hours after my last load, probably could of went 24. Am I not letting enough air in? or could the wood be a tad on the wet side?, or something else?.