Steering shaft u joints

[SVX8588]

I've had some play in my steering for a while. It's mostly noticeable when traveling straight down the highway. The steering wheel will move maybe 1/4 inch at the outer edge before the wheels actually start turning. I can feel the looseness and it really bugs me. I don't think it's tie rod ends because I had the whole steering rack out and checked them then. So I guess it either has to be play in the rack itself (which I doubt because it seemed tight when I rebuilt it) or the u joints in the steering shaft are getting loose. I'm guessing its u joints because I looked at the pieces from my parts car and one of the u joints is a little loose. But I haven't been able to check it closely on my good car.

Either way, does anyone know of a source for a new one? I don't think the joints themselves are replaceable, and none of the parts stores around here have any steering parts for the SVX. Too bad the one from my parts car is bad