Thor Super C (Chateau/Four Winds) improvements and mods

I have used it about 8 times. Currently it makes a very loud pop halfway while going out, but smooth going in. I am going on another trip this weekend and another next weekend. I am going to run it in and out a lot between now and then and try to identify the issue. It does not appear to be jumping a gear, but I am not the expert. I am still concerned, but it is way better than it was when it was brand new on our first trip. But understand, I still don't know that it is right yet.