Hello Michael. Thank you for replying. A software solution would be easier than a new lens, so in Lightroom I tried lowering the Radius from .8 to .5, dropping the Detail to zero and the Amount to 19. That will get the fringing to acceptable limits probably for 17 inch print, but no more. For a 24 inch print capture sharpening still needs to be off.
However, that may well be normal in larger prints and if that is the case I will stick with the lens.
FWIW, I tried DXO as well with similar results.