6 year old Traeger Grill. Wife started grill as usual. After ten minutes she checked and no heat. I pulled components out to expose the burn box. This was the first clean up after a couple weeks use of Pit Boss Pellets. There was a pile of pellets overflowing the box. When I vacuumed this overflow down to a level above the starter there were big hard chunks of what looked like carbonized sugar in the fire box. They could be crumbled with some effort but otherwise they were preventing the pellets from reaching the starter. Normally I use Traeger pellets and I've never seen this in all these years. Anybody else seen these in their burnbox?