Originally Posted by Al.Fisherman
Find a sleeve that will fit on the shaft, drill it and use 2 set screws, one at 12 and the other at 6. Try not to get it where the roller will be. File or grind a spot for the set screw to bottom out on. That's one solution.
Sorry, Ron but you shouldn't have set screws opposing each other. If two,they should be located at 90 degrees apart. Not 180.