Case 850K,Series2,open station, won't speed up,no codes

Hello all. So,my saga continues. 1743 hours . Purrs like a kitten. Joystick SEEMS to do everything it is supposed to! Including rabbit turtle. It shows on the dash it is shifting, 20/40/60 and 80 %. And does speed up and slow down, but it will only creep. Doesn't move in 20/40,starts creeping at 60,and a lil more at 80. That's it. VERY annoying!. If I am scrolling correctly, there are zero faults. No codes, correct?. I have freshly put around 30 minutes on it,with NO codes. My question. Is...

Case 850K,Series2,open station, won't speed up,no codes

Case 850K,Series2,open station, won't speed up,no codes