Does anyone know where the vacuum hose terminates in a Quad Castile? Obviously one end of the hose goes to the vacuum switch, but the other end? Looking at mine it appears to go to the top of the auger near where the pellets drop down into the burner pot, but I can't really get in there to be sure. It would be a logical location as vacuum should be present there, and it would help suck the dust and fines away from the vacuum tube.