just started burning hamers a few days ago (bought 2 tons in aug) getting huge clinkers, didn't have this problem with other pellets, could these pellets be bad? or maybe stove settings? have tried different settings on the lower 3 buttons, low fuel feed 2-6 and low air 3-7, top buttons 2-3, 3-5 have not noticed any difference still getting huge clinkers, stove is kept clean. They do give off good heat, does anyone have any ideas?