Thanks David. I'm still not convinced that my kickdown switch is working properly. I think my pressure cable is also off because the most I can get it to rev is about 4.5K rpm. The one time I thought it was 5K+ might have been the excitement at feeling the downshift which it used to refuse to do.
I've been experimenting with the shifter, rowing it manually and letting it go full auto. I had a Tiptronic in my V6 Passat which was had its good points, specially downshifting. I think if the MB tranny is working, it will have just as good if not better control with the "3" and "2" selector position.