Proportioning valve help needed

Thanks for the very quick replys, Appreciate the information its just what I was looking for. TEKSEK, do you have any personal experience with the adjustable type? I saw them on the Doc Diff site when I bought the cylinder. Can you really tell a difference as you adjust them?

One last thing I forgot the first post, where can I get the rubber O-ring for the pedal rod. It was rotted from the original cylinder leaking.

Thanks
Rodney