While blowing the tire chain got sucked in and the machine stalled. It is the older blower with drum auger and it wont move. Chain is tightly wrapped around shaft under 1 side of the right drum. Would removing the right side of the bucket help to remove the chain? Any ideas? The shear pin did not break so I'm concerned that the previous owner may have used a regular bolt. Tried removing shear pin, not coming out.