Well, my caster was set by 6 degree shims supplied by Sid@dropped axles, but funny you should mention Toe! I set it by measuring tape while up in the air(on lift) at about 1/8" toe in. I told myself a while back that I was going to have to set it better than with a tape measure! It's our anniversary today, so the truck is on hold today, but I did get the exhaust on this morning, and it's WONDERFUL!
I do have a home made toe in gauge that I need to pull out and will check that tomorrow, probably has something to do with why it's wondering at the slow speed?
dne'
ps: thanks for bringing it up!!