There is something wrong with the contour master on one of our s670's. When we hook up our header which is a 635F and engage auto height button (press 2 or 3 button on hydro handle) the header just goes nuts and goes side to side constantly . It also does this when machine is standing still and not moving. The problem is not the header because when we hook up to any of our other 635F headers it does the same thing, and when we hook up this combines header to our other combines it works flawlessly. Also we set the feederhouse tilt and auto height sensitivities the same as other combines and even tried lowering it way down. We swapped the feederhouse contour master sensor,reloaded the software to controller that controls this,swaped controller from other combine, crimped new pins and checked wires at single point header hookup and mechanic cant figure out problem. Any advice or help would be greatly appreciated.Thanks.