Originally Posted by
jjhabbs
...when I tightened the crank all the way the chainring rubs on the stay...The stay has no damage.
Why don't you move the DS cup out the necessary distance, probably only a half a mm or ?, with a spacer ring? Check your current chainline, it may be off that much already?
(That's old school. Did this with my Maserati MT-1. Ring cost $1.50 at my LBS.)