New pellet stove owner, Regency GF55. Don't know if I have too much air or not enough or if I need to adjust the feed trim. After 8-9 hour burn, burnpot is filled with ash and pellets are overflowing out of the burnpot. I am burning Green Supremes and Geneva. Combustion air was set on 4/5 and Feed Trim set at 2/5. Any suggestions would be great!!