Having trouble using PA Pellets, 1st year user of these pellets and I am finding out these are very dirty pellets compared to Bearfoot or Drycreek which I used last year. My problem is that the stove will shut off and I find the burn pot is empty like it will not feed properly. My feedrate is set at 3.5-4 range and my temp is set at 75. When the stove is just cleaned it burns great for the first week and in the middle of the 2nd week it just shuts off. I have an Harman p61 w/o automatic start. Last year I burned bearfoot and drycreek and never had one problem, this year I am finding that I have to clean the prob all the time because these pellets are very, very dirty. I could go 4 weeks or better last year w/o emptying the ash pan now I am emptying every 2 weeks when I have to clean the stove. Anybody had a similar problem please lend some information.. Thanks