Good advice from both, thanks.

Treasure didn't start sweating while trailering until the third trip. All was fine until then. She will walk over plywood, over and under tarps, through obstacle courses, over narrow bridges with water running under them. She will walk into a grooming stall that is about 7 feet wide and stand tied. I have even walked her through a human sized doorway between the barn and bedding room to see if the doorway was the problem, she touched both sides going through, but had no problem or hesitation going through in either direction.

I will back off to the beginning again and let you know how everything goes. I just wish I had a trailer that I could access regularly.

Thanks again,
Will update in a few weeks.