I have a 722.3 transmission which I just installed into a 300SD. Won't go into all the details, but basically it doesn't shift into 4rth gear. This could be a modulator or a pressure issue within the trans. Yes I know that the correct vacuum needs to be present at the modulator valve and the vacuum pod needs to be set correctly, but to do this there needs to be some test equipment set up. I wondering if anybody on this forum has setup to test working pressure, and modulating pressure and what size banjo fittings where used ?