I bought a new 16' tilt + 4' stationary 14,000lb equip trailer couple months ago and this thing is driving me nuts! It has a weird bounce that pulls and pushes my truck (superduty 1 ton dually), it doesn't sway but it's the roughest riding trailer I've ever towed. It had good dexter torsion axles and a very heavy duty frame and I sure can't see anything obvious that's wrong. I tow a 9400# excavator and a 7500# track loader so it's not overloaded. Has anyone experienced a similar problem or know anything about this kind of a problem. I also have a 14,000# PJ dump trailer w/ spring axles that tows like a dream compared to the tilt "cup thrower".