Found an optic interferometer test of the ES 127ED,
here. (Top of page) Haven't had time to read it all or who did the test ATM. It's Wolfgang Grzybowski's site not Wolfgang Rohrs site..
Edit:
Annnd at the very bottom of the page he appears to be shimming radially exactly the same lens cell as the 127ED. Obviously he found an issue with radial adjustments and shimmed to correct...I wonder?