Well, we are going around and around. As I said, I tried recentering the axle myself, then, not wanting to screw-up a new ultegra hub, I took it to an experienced mechanic who also thought the wheel needed to be redished. It did not, and he took a lot of time measuring the frame and it is straight. I had assumed that the hub just need to have the axle centered with the right spacers. But, if the old experienced bike mechanic could not see that, either I have misjudged him, or it is something else.