OK new development: the restricter valve was not the issue. They got the motor running but it had no power. The timing was way off. After much discussion with the tech and the shop forman we determined that the problem stems from when I had the motor out and was replacing various components. One component in particular was the front crankshaft seal. When I removed and reinstalled the front vibration absorber timing wheel I evidently reinstalled it way off the timing mark. So when the techs installed the new FI pump aligning it with the timing marks they were inadvertently setting it up wrong.
So now they will first set the engine timing by the camshaft marks. Then they will remove the timing wheel and place it back in its proper position then they will once again remove and reinstall the injection pump.
All because of one stupid mistake on my part.

Hopefully tomorrow.
Mark

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91 300GD SWB with transplanted 87 OM603 turbo motor