New to this forum and pellet stoves. Last Saturday I picked up my first pellet stove to replace an existing Harman coal stove. The stove is extremely clean and really doesnt look like it was used much at all. I picked up 10 bags of Lignetics (green lettering) and lit the stove according to the instructions. It did not come with the room sensor so I am on stove temp. There was about 10 lbs of pellets in the stove already and I topped it off. Stove temp on 7, feed on 3, got a good fire going, adjusted stove temp to 5, house was 72, 1 1/2" of ash which was like powder. By Tuesday the ash really started piling up and still resembled pellets. I could also see smoke in the back of the pot. The ash would cake up and overhang the edge until a clump would fall. I played with the feed speed and it really didnt change. Yesterday it started doing the opposite, burning pellets falling into the pan and still has smoke in the back. The feed is on 1, temp on 5 1/2, and not putting out heat like it did before. Any idea what I am doing wrong? Thanks