What Jeff said above in post #8 . . . with the front wheel to hub issue we looked at at Dave's house [that] Friday night, the amount of runout could have set your toe-in to toe-out on the initial alignment.
I don't remember what we measured at the tire surface, but an 1/16" at each wheel could account for 1/8" out IF the tires were at that position when measured. Toe-out on these cars is a critical measurement and NOT desired. Toe-in is the preferred adjustment for straight line tracking . . . along with tire pressure as a secondary value. Remember, we are driving around on some pretty fat tires and therefore susceptible to a wider "footprint" picking up every defect in the road (compared to a skinny tire). Lower pressure will help with that aspect. Also, tread design can play a part in what is called "tram-lining". That's when the tread design follows the lines in the road and can make a car very "twitchy".

Still love your car, happy you won all those awards at HB, glad I got to meet you at Dave's.

Doc