just go to trimbles web sight and they will have it there. I ran it on my combine this year and was exstreamly happy how well it performed it let me play alot closer attention to other things and having and straight row to unload on the go made everyones job easy.
never cut corn....I have alot of weights on my back axle might get better more stable steering response IJ did you try there easy calibrationIJ I also have axle estensions too. hopefully you can get it too work as good as it did for me maybee not possible in cornIJ good luck