I had a problem with my Brute 10hp 30" snow blower not propelling itself. This happened after trying to clear very heavy wet snow in the rain. I also noticed a banging sound at this time as if a wrench fell in the impeller. My mechanic friend reinstalled the electric starter which I had removed some months earlier because it was literally falling off. We started the machine and on the level garage floor it went ahead and back normally. The auger, however, was still making a lot of banging. My friend could not detect any bends in the auger but could feel the auger shaft banging against the part where the auger housing attaches to the rest of the snow blower. He figures the shaft bearing needs to be replaced. Other opinions? Could this be an expensive repair.