All derailleurs can only move just so far. The screws limit this further. Mine is at its actual design limit, or at least that is what I have thought up to now. I did back out the H screw and remove the cable. Then to get smooth running I had to push the derailleur with my finger to the right just a little bit. I suppose I was bending the derailleur because there was tension pushing back on me. The difference between works and doesn't work might be only 1 mm.

What's funny is there are plenty of examples of needing to adjust for a wheel change , but very few where the derailleur can't accommodate it. I'm at a loss. The hanger definitely needs a look see.