[LostMy65]

Okay, I put a framing square on the ground, and measured to the top edge of the rim and to bottom edge of rim. The top is 5/16" in.
I ran a string from the back tires to the front tires, making sure the strings on both sides of the truck were the same distance apart front and back (parallel), and each front wheel is toed in 1/8" (1/4" total).
My steering gets a little unsteady side to side at speeds above 50. And rather scary 60+.
.
I've been reading lots of threads trying to learn what does what.
.
I guess I'll try to shim the top out to get it closer to 1/8" in at top.