I know this is a bit late in the game, but I believe that the drawing has the spacing of the holes reversed. On my Cub-22 the hole spacing on the end with the bearing is 1 5/16" (1.31) and the other end is 1 1/2" (1.5).
This was corrected in another thread "Cub Pittman Drawing". Can someone update the PDF links in this thread to get the updated drawing so users won't get the incorrect drawing?