Can you raise the machine with the final drivesIJ You can on a 1680. I think it gives you atleast 3" and it's free! There are two sets of mounting holes where the final drives mount to the axle. Maybe you have already done thatIJ
We have a 1480 with the small tires,that always had a hard time getting over header trailers. We extended the lower cylinder mounts several inches. It now lifts high as possible without jamming the hinge joint. It raised the header about 5 inches.