I've had the same experience as Tim on my '50, 3604. After rebuilding the front end, new king pins/bushings, tie rod/drag link ends, steering box and installing Cooper Radials I used the stock caster shims and I don't have any steering problems. It turns easy, one handed if she's rolling a bit, and it does not wonder. I've posted this video before, it's nothing to fancy and it has real lousy sound because its a cheap ten year old Kodak Easy Share camera mounted rigidly to the seat back, but you can see how easy she steers, especially in the beginning when I pull out of the driveway and how straight it tracks at speeds up to 65mph.
