"The best thing we've done with our 36 foot TT is add a couple scissor jacks to lift the frame right behind the rear axle"
This is what my thought was as well. I have the Windfield cross bar stabilizers on the front landing gear and the rear stabilizers that helps a lot with the side to side and the locks between the wheels helps a lot with the front/back motion. Its the bounce I think is the problem. Its not enough to bother my wife but it annoys me a little bit. I can easily live with it but if I can reduce it I will.
Dan