Michael R and PE: The patches were not in perfect focus, so sharpness is impossible to gauge. I switched to another lens which eliminated the problem of corner-falloff. But the sharpness of that lens isn't the best. As was pointed out before, contacting is the best way to do this, and I need to build a fixture that will let me contact wedges onto 35mm film.
BTW, these developers have similar chemistry to D316, so I figured sharpness will be similar to D316, so I didn't worry about it. But it would be good to be able to check sharpness anyway...
The fine grain of 214D surprised me. At first, I thought the scanner must have been misfocussed, so I re-scanned the neg -- with identical results.