as far as the settings for the fuel and idle screws (those are the 2 important ones) once you can get it to run, those screws are fairly easy to set.. i usually set my fuel HIGH, and then drop the idle to bring it back to earth.
does the pump still leak fuel? if it does, re-seal it before you put it back on the car.
and FWIW, 30mpg is TERRIBLE in a diesel VW. my GTI gets better (~33mpg) economy than that, and its an 86 w/ CIS-Lambda thats never been tuned since 86. hell, my 83 Audi 5000TD got better than 30mpg.
it should have had a FAIRLY BAD fuel leak for it to account for the nearly 20mpg drop in economy..
is the pump back on the engine? do you have a dial indicator to check the static timing?
THIS LINK should be all you need to get your engine running again, assuming the pump is in good enough shape to allow the engine to run..