In my autocross experience, I used to get to the end of a slalom and it would feel like the steering ran out of fluid. It didn't, it didn't slosh away from the pickup, I'm convinced that the fitting used to connect the tank and the pump (which also contains some pressure relief mechanism?) is a literal bottleneck and the system can't keep up with the fluid demand.
I have an extra pump from eBay (sorry Chuck) that I want to re-do and try a different flow control valve. From exterior dimensions, many Saginaw T/C pumps seem the same - I think the differences are in what engine RPM they are designed to work with. A truck PS pump and a Neon pump may be the same, but with one or two things adjusted to allow for 4000 or 7000 RPM max speeds. Since I have an underdrive pulley, my situation might be unique, but that's what playing with the extra pump would be for. Anybody - this makes sense?