I put vacuum directly to the black plastic line that goes to the modulator. Before I did that, I removed the vac line and checked it by its self. The modulator cup is NEW. I also replaced the junction hose between the plastic line and modulator.
I then checked with vacuum and it wouldn't hold. Deffinately trans oil inside the modulator cup and adjustment area where the modulator key is.
Surely someone out there has replaced one??

__________________
My Truck.. 2007 DODGE, 5.9 Cummins, 6spd stick, 4X4. My car..1977 240D, OTHER WHEELS...1955 VW Oval window bug, European Delivery (Holland) with a 1700cc, 2 barrel, Porsche drum brakes. 1939 WILLYS Pick-up. 1967 Triumph 200cc Tiger Cub. 1976 Honda 550F 4cyl Motor Cycle.