Gerald, in your first post you said "The tread on the tires I replaced were not worn, just old and cracked." I took that to mean the front tires were evenly worn... one edge was not worn more than the other side although there were not all Michelin. Assuming evenly worn and good handling before, it's not an alignment problem.
With two people and a tape measure you can check the toe in by measuring to the same spots on the inside of the tire (usually a rib several inches below the tread). You want the front measurement to be around 3/16" less than the rear on a 22.5 tire. Doubt you will find it out of spec.
Let us know how it handles with 80F/90R psi after your next trip.