Marcus,
Thanks very much for your post. I think you've done a good job of articulating the issues here.
I got to listen to the Ohm's a little more yesterday and I must say that the tonal character and image focus change quite dramatically when you adjust the distance between the MWT's. By pulling them farther apart and thus aiming the supertweeters to converge closer to your listening position, the high's are emphasized and the image focus becomes sharper. Now, I think I may currently have them a little too far apart, because yesterday it sounded as if too much of the sound was "stuck to" the speakers, which is definitely NOT the way Ohm's should sound... so I'll try moving them a little closer. But as I said, imaging definitely tightened up and the sound brightened when I moved them farther apart.
I, too, had mixed feelings about accepting John's offer, but I was so taken with his determination to please and make a sale that I agreed to give the modified drivers a try.
For what it's worth, my amp is a ss/tube hybrid, and I'm wondering how that affects my current results...