Yes - the 50mm viewfinder also has that adjustment. When at infinity I have it dialed to infinity. It's still way off. I don't think it can be shimmed because its too tall, unless there are negative shims to bring it closer.
Lacking any other solution, I've thought about setting up an experiment where I take several images of something around 50 feet away, adjusting the parallax adjustment down some for each image, and then seeing what I get. Unfortunately this counts only for that distance and may be different at others. I don't have a piece of ground glass small enough to tape to the film gate but maybe I can make one and try that as well to compare.
Alternatively I can look for another viewfinder that has a much shorter profile. (?)
Jeremy