Wondering what your ash should look like...I been burning MWP mixed with my Thelin on the low setting for 3-4 weeks...the other day I cranked it up to medium and had it going for about 10 hours...when I went to clean my firebox up I notice that the ash was in the form of BB size and black in color....I stirred it around and it seemed like most of it was still in a the amber glowing stage. Made me wonder if the pellets were jumping out of the pellet firepot to early....Should also mention I had my auger feed on the lowest setting during the medium burn... Usually when I burn on low..all of my ash is very fine and light brown in color..??? The damper was never changed...I alway leave it about 3/4 open as per Thelin manual..