Congrats on your new trailer
๐Like Bob says, post some more information about your towing setup.
I have noticed too towing my coach with both my station wagon, and my truck, that going over large expansion joins, like those on bridges sometimes causes that push and pull feeling.
Didn't the dealer spend any time driving with you? One of the service techs spent about an hour with me on my first ride, we covered surface roads and some expressway. He was able to identify what was causing the various feelings, and assured they were all normal. The white knuckles came later that day, as I had picked up on the end of Jan, and it had turned into a blizzard as I was driving North along Lake Mich... ahh good times
๐Even though I've towed nearly 10,000 miles now (nothing compared to the experts here), it's still not often enough that I don't feel a little nervous when I hitch up and drive away.
2013 KZ Sportsmen Classic 200, 20 ft TT
2020 RAM 1500, 5.7 4x4, 8 speed