Originally Posted by
FBinNY
...... The right fix, would be to thin the inner ring to move the teeth over closer to the outer ring, but that also is lot's of work unless you own a belt sander or similar tool. ......
You can also thin the crank set just on the mounting pads for the smaller ring. Quick work with a file, but go SLOW and measure often to make sure you are staying flat and keeping the inside surface parallel to the outside surface.