| Re: Calling Shagwell
I answer to PM's as well, lol. Just not on here as often as I used-to be.
Yes, it works very well. IIRC, the front half of the valve(facing straight forward; out int he open) is the rear line. Three small "machinists" washers or thinner edge 3/8 hole electrical eyelet terminals clipp-off(thus just the washer piece) is a great starting place. I don't believe I've ever used more than 1/8 thickness total stack, but I usually start with three, test and change up or down as needed. - I've done this method to at least 5 different disc rear 3rdgens now; keeps you from having to re-plumb the system to install an aftermarket adjustable prop valve.
To properly test you need to do some typical running around town to have the brakes at operating temperature, then go some place you can safely do some "panic stops". You want the rears to lock up in the last 5-10ish feet of the braking distance. You do not want to simply set them to lock first as that can/will cause uncontrolable sliding during hard braking.
__________________ Jp Shawgo
1986 camaro - 10.5 outlaw/Outlaw 632
1989 lead sled still awating its transformation 
- If you can't afford to do it right the first time, can you afford to do it again? | 
