After owning a 13 year old Harman Invincible, I bought a Danson Glowboy. The stove will turn off after 4 hours. The pellets in the hopper begin to funnel away from the auger feed so I have plenty of pellets on the side and not in the center where they need to be. I have to continually push pellets into the center by hand, which is unrealistic. This stove is intended to be my primary heating source as was my harman. Has anyone had a similar problem with a Glowboy fireplace insert