I definitely agree the software sill needs improvement. This is my first pellet grill but I can see how wet pellets and humidity could have an impact on the performance of the grill. Saturday I ran the SF for 7-8 hours on Smoke Boost (made a lot of jerky) without any issues, brand new bag of Weber pellets but the humidity was 80% all day.
I got in the habit of vacuuming the burn pot and inside of the grill after every use, there were a lot of unburned / half burned pellets but I attributed that to running smoke boost for so many hours. I also empty the hopper every 3rd cook and clean and vacuum it, I think it helps control the pellet dust. The revised firmware, 4035, seems to have limited the reversing of the auger which seems helps the amount of pulverized pellets at the back of the auger.