I installed a 1.250" straight bore master and an adjustable proportionig valve in the line for the rear brakes.
The adjustable valve is mounted to a bracket that I made from the original S10 prop valve mounting bracket with several areas removed and a mounting surface for the adjustable valve added. I used the lines that previously connected the master to the S10 prop valve to connect to the front brake line using a union and to the adjustable prop valve for the rear.
As a starting point I have the adjustable valve all the way out that I believe should provide minimum pressure to the rear brakes. I have tried a few tests and the driver's side rear tends to lock up first but it takes a pretty hard braking event for that to happen. I will continue to test and adjust as needed.
