|December 20, 2010 - The solution to the bad adapter was to replace it.|
This unit - of unknown origin - would bottom out a full 1/2" higher up on the column, avoiding the problem. But it was both too short and had the wrong bolt pattern for the wheel. So I cut both apart and welded them together using a piece of pipe as the spacer. Nice and solid, and with some attention to detail everything is parallel and centered. There's a rubber boot that slips over this so you can't see it.
A quick test drive showed a massive change in the steering feel, with good centering and lighter effort. Time well spent.