The auto shifting for manual transmissions in this game is horrid, and this tractor isn't the only one that suffers from it. If you have something running off the pto, your okay but if you don't it does suffer. May i recommend a mod from the modhub and that's "Toggle Gear Shift Mode". Complete game changer for me! I haven't touched the transmission from 22 so however it ran then is how it runs now, except for the 2 engine options. I'll do my best to look into that though.