Your right, I replaced all the glow plugs, and the new ones run the same amount of time. I even put the juice to an old one out of the motor to see how they worked, they do work very fast, alot faster than I thought they did.
I've been trying to find the valve wrenches locally, but have had no such luck. I went to two auto parts stores, Sears, MB dealer And asked the "mechanic" (AKA, The Butcher) at work. The "mechanic" at work told me to check a plubing supply house for the wrenchs... So much for getting them quick, it looks as if I'm gonna have to order them...After I check the plubing supply house.