Only removing the balance shaft belt is not sufficient. You can remove it, but you must also pull the rear shaft and install the stub shaft, the front shaft can stay in.
Its not until both shafts are removed that there is an issue with oil pressure, IIRC. Someone correct me if Im wrong.
If I had thought of it earlier, I may have drilled some hols on the Prothanes to help a little with the vibration, but Ive learned to love with it. I know this would negate some of the advantage of installing them in the first place, but my bushings needed replaced regardless and I really do think that Prothanes are overkill for the car to begin with. Stiff is nice, but I doubt anything would have happened by now if I had stock mounts in the car.
Quoting Brianawd:
Prothanes are not as bad as people make them out to be(wipe the sand out your vag people). It just takes so getting used to. I my self would never go back to factory rubber mounts.
Always gotta be the tough guy /ubbthreads/images/graemlins/uhh.gif