Adding a valve to the stack is a disaster, I have one set up that way and need move to a diverter valve, I have to put it where I want it and unhook it, its kind of an interesting valve thats for sure, when I swing my auger out it causes the reel to move one direction or the other. Tried configuring it a couple diff ways with no success.
My other 2 have a divereter valve tied to the unloading auger and it works well, I will be digging the combines out of the shed soon, brother started them all up today, if ya want pics and plumbing I can help ya with that
I moved the auger switch to the right hand console and put in a push button beside it. Than for fun I installed a propulsion handle for a macdon swather to have my header and reel controls together
For/aft was not an option on the 1400's, maybe on the case IH ones but not that I am awear of