77 Proportioning valve stuck HELP!

[brianstrange]

I'm having an issue bleeding my rear brakes, and I think the rear outlet of the prop valve is closed. The rear inlet is getting fluid, but nothing to the outlet. I've read up about centering the pin, but not sure how to do it. I tried pumping it hard with a front bleeder open, and no luck. Any help would be greatly appreciated.

 

[broncnaz]

USually have to pull the pin out slightly and hold out while bleeding.