Hello has anybody had this message pop up on monitor? CALIBRATE HEADER GROUOND HEIGHT SENSORS. I did a feeder calibration with header off, then I attached the MacDon D60 header and lowered it to the ground for 3 seconds then all the way up and it still doesn't fix the issue. I attached the combine to the pickup header and the message disappears. As soon as I unhook pickup head the message comes back. I can't figure this one out. Any ideas? Thanks