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yep, I've got the tool. 

It'll be Monday before I can get a picture of the calipers.  I'll do it then, anything else that would be helpful w a pic?

So here's what I've got: The car has been in the family since new, from my uncle to my dad to me.  It's got under 46K on it.

I went thru the brakes last year, changing the fluid, replacing MC, calipers, and rotors, and adjusting the shoes, and bleeding it.  Stopped pretty decent.  Then a few weeks later the booster went out, so I had it rebuilt and the proportioning valve and distribution block rebuilt as well. After reassembling everything and bleeding it there's a good pedal feel when the motor is off. 

As soon as I start it, the pedal goes waaaay down, and then sinks a little further.  It stops, but pulls to the right.  When I start checking things, there's no flow to the LF caliper, explaining the pull tot he right.  It has good flow on all other three wheels, the rear brakes are properly adjusted, the bleed screws on the calipers are in the right position, I bench bled the MC.

I've bled a couple of gallons thru it, and I'm stumped - its as if the piston in the distribution block is going all the way to the front, blocking the LF port.  I even got a repro distribution block and proportioning valve assembly from Tony Branda to see if the rebuild of my originals was not up to snuff.  Exact same behavior.

Any ideas on what to check, as I'm out of ideas, and frustrated over not being able to drive the car.

Thanks for any help,

Eric Mullins