I must have missed the follow-up e-mail on this one or I would have responded sooner. When I put everything back together, all of the parts just dropped into place. In addition, during the fabrication phase, I set it up so that the corresponding bars on each side were the same lengths. That is, both top bars are the same length as are both bottom bars, so swapping them wouldn't have mattered. It's easy when you can set the bar lengths first, bolt them onto the frame tabs and then weld the tabs onto the frame and rear axle. Sort of like shooting a hole and then drawing the bull's eye around it.

That said, I'm going to check the preload as suggested as a possible cause for binding. If that is the case, I'll then have to figure out what changed over time to cause that. Another thing I did during fabrication was what the alignment shops call a "thrust alignment" so that the rear axle is perpendicular (within 1/32") to the frame center line (i.e., pushing the car straight ahead), and then align the front axle parallel to the rear axle. I can still let go of the steering wheel and the car drives straight as an arrow.