Great to hear you had a good trip.
Sorry to hear it had to end!
The way you described the leak at your warderobe slide sounds like what I experienced. Just during a high wind rain storm and only when the slide was open. Did you ever find out exactly how/where the water is getting in?
I really like the X-Chocks too. They do help. I also placed a step stabilizer under the bottom step. It seems like most noticeable movement occurs when people enter/exit the trailer. The step stabilizer eliminated that. It also stabilized the steps themselves as well.
We're going out this weekend. My SIL, Daughter and 2 grand daughters will be joining us. Taking the LaCrosse and an '07 Flagstaff pup I picked up cheap. It needs a little minor attention, but overall in pretty good shape. The family will use it whenever they want and I'll probably use it when I go on fishing trips by myself.
Good luck and happy camping.