Let me clear up the confusion. We have several kits available for MacDon, depending on usage.
First, for on-ground cutting (like soybeans), use the "MacDon tilt kit". http://www.headsight.com/tilt-kit-macdon-heads
This kits feels the motion of the float optimizer, both up and down and side to side. This allows the combine to keep the float optimizer at the correct tension (height) and square to frame of the head (tilt), so that the float optimizer can perform properly even thru rough terrain. It can also work with the head riding on the gauge wheels in some off ground conditions. This is one of our best selling products. I always tell customers "If you ever find yourself wanting to manually tilt the head while running, this kit will help you".
Second, for cutting wheat, oats, etc, use the off-ground "Wheat" system. These are the "bow" sensors that mount under or in front of the cutterbar and allow cutting from 2-3" up to 18-21" off the ground. Its for use with the head locked in rigid mode. They are available for all MacDon heads, and many others as well....not just JD. http://www.headsight.com/header-heig...dsight%C2%AE-0
At this time, you cannot seamlessly switch between the two modes...you have to chose one or the other. Both can be on the head, just only one used at a time. However, the "Feathersight" add-on to the wheat system can allow you to drop down to get small patches of down crop by tying in to the lift pressure and adding it into the height equation. We don't recommend it for on-ground use over large areas.
Third. For the ultimate system, we now have available Terrahawk with Horizon and float sensing. This system combines our Terrahawk radar sensors with the Tilt kit sensors, & a f/a pitch sensor, using our sophisticated Horizon controller (Wow I sound like a sales guy-- help!) to allow full adjustment over the height range in all conditions. All adjustments are done thru the VT on the cab. Its $$$$. http://www.headsight.com/terrahawk%C...-control-grain