It seems when i get into heavy snow the auger will not turn, and i know the belts are tight . it seems to be pushing the auger in with the wieght of the snow and sliding the gearbox further in on the impeller shaft causing the gears not to mesh in..and allowing the shaft to turn freely in the gearbox.......at least thats what i think....but i wont know untill i get a parts manual that will show me the interior of the box .