[gearhead]

I think I'm good. Before the afternoon rains set in I rolled under it this morning. Used a carpenters level on top of the axle and confirmed both axles are arched. Also put the level on the bottom of the axle and measured the gap on both axles at the eyeballed center. Both showed the same gap, 250" I think it was. (I did this 5 hours ago!)
Just for the heck of it I put the level on the driveway and it was fairly level, so I measured up to the axle tube near the springs on both axles, at the center, and at the opposite end and they were consistent.
So, unless I think up something else, I'm calling it good. I should have had a regular schedule of rotating the tires.