Gravity feed pellet stove

This is my first year using a pellet stove to offset the cost of my geothermal heating bill of 900 a month. Overall it has been helping. But it hasn’t been to extreamly cold this year. The pellet stove I bought is gravity feed and does not have a mechanical hoper. So my only complaint is the amount of saw dust in the bags along with the pellets. The saw dust tends to act like a wall and prevents the pellets from freely sliding down into the stove. This has cause the stove to go out in the middle of the night. Once burning the pellets do put out great heat. If I didn’t have to check my stove every 20 to make sure sawdust isn’t hold the pellets back I would rate higher. I’m sure people with a mechanical hoper don’t have this issue so I would still recommend to others.