Tom, I think he's talking about the Pellet Bin, not the Firepot, at least that's how I read it.
Knowing the laws of physics like I do, it's impossible for the fire to travel up the ramp and into the auger without a strong wind (and with your elbow/stack that wouldn't happen).
Yup, call CS and let us know what you guys figure out.
Something else is going on. NEVER heard of this in a Ramp Model.