[Holy Smoke]

You are on the right track !! And you will improve your braking. As in your example of the motorcycle braking. All motorcyclist know that if you only use front, your stopping is medium good. If you add the right amount of back, you stop better. If you have a load on your back seat, (I won't explain "load"), then adding more back brake squeeze and front will help even more. :happy:
I'm curious,,, does any one have any ideas on the old 68-72 year proportioning valve to "tweak" them?
the Skidder