Mike, hope you meant LEFT muffler. If it was the right, yur axle is in backwards. (1300 goes left to right but 1100 goes in right to left.).
George, not sure if I am understanding you right... but my axle on my '91 1100 goes in left to right, the bolt is on the right side. Did they change that over the years? But you are right on the LEFT muffler!