you try with out the automatic? I did it with both on the big grain cart and went to 4h in both modes.
So it's the 1066 and 1466 where theres an issue. The 766 and 966 are working normal
the 1466 works fine but i see what ur saying about the 1066 i will look into it. I just tested them both and 1466 worked fine for me.
I fixed it so it will now shift through all gears in automatic. Redownload and let me know.