Well, I'll add another possibility for you. Maybe it's you.
When I went from pulling a trailer to our first Class A, that dam thing was all over the road. After complaining on this forum, It was pointed out to me that with that huge windshield right in front of me, I was looking at the road much closer than I would be when driving my truck. I was instructed to look much farther down the road, maybe two or three cars ahead of me. Sure enough, that was the problem. Once I started doing that, the coach would track straight and true. If i took my eyes off of the distance, the coach would start wandering again.
This is just something that you will get use to after driving it some more. Be patient, it'll come to you.
Ron
