Recently acquired an '06 T139. I have a squeeky-creeky floor, just about 4 feet from the rear of the trailer, which position it just inside the entrance.
Upon inspection from under the trailer, I find that there is a seam running across the width of the coach, where two sheets of plywood meet. There is nothing
there to support the joint, and I can visually see it flex when someone walks over it. It needs some sort of support. Any one else experience this?