I finally settled on some rigid aluminum stock clamped onto the inside fender. Stuck one end a few inches past the rear fender so my tape could see it and the rest hanging out front. These were four foot lengths. After satisfying myself that the car was tracking straight I set these up and made sure that I was level, the car was level and the bars were level. Any deviation was going to radically show up at the ends out front. The initial readings showed that I was way out +3 degrees. I managed to bring it down to zero, tightened everything up, took it out for a test drive and brought it back. Set it up again and it was all good. Car tracks straight, steering is much easier and braking is far more positive.
My tires, Blockleys, have been chewed up a bit but they will last the year. In the meantime, after several discussions with "those who know things" I'll be looking into some decent motorcycle tires for this beast. The Blockleys, which were far and away better than the stock Avons, were acquired here in the states and are cracking already so that tells me that they were in a warehouse for a serious amount of time. No excuse for that.
If it's not one thing, it's something else...