We've done some searching and found some threads regarding a fix for the center stand. Graham's bike goes past 'center' on the stand and makes it tough to put on and off the center stand. Looks like a favorite fix is to weld some extra material on to keep it from rotating so far.
Any suggestions on how much material needs to be added? It sure seems like there ought to be a reason for this problem. Bushings? Stopper?

I can't find #11 (Stopper) on the bike anywhere.