Brian,
Perhaps you didn't understand my description of what I did in trying to follow your instructions, or perhaps I am not understanding you.

I have the Gatorade bottle sitting on the inside of the fender, above the spring, and the hose runs from the bottle straight to the inlet side of the fuel pump.

When having the clear hose from the discharge side of the pump going into an empty bottle a couple ounces of fuel were discharged through the fuel pump with 15 seconds of cranking.

I loosened the nuts on the injector lines on top of the injector pump, one by one, and had fuel coming out of each one. If your telling me that it makes a difference to loosen the nuts at the injectors instead of the ones on top of the I.P., I'll do that. I figured it's a given that if there is fuel bleeding out of the top of the I.P., fuel is making it through the hardlines to the injectors.

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Pictures of the MB: http://s230.photobucket.com/albums/ee41/EricandRobyn/1981%20Mercedes/

1981 300 SD with a Goldenrod water block and Injetor line heaters. EGR is missing

1999 F-350 with HP X-over, Dahl 100 Fuel Filter, Coolant by-pass filter, CCV mod, Tymar intake.

Both on single tank WVO blend