Worked on my dads 91 Indy 500 the other night. We had to replace a spindle so we got a new one from the dealer because they happened to have one sitting there and thought we would be on our merry way. To my surprise, the steering arm doesn't seem to fit onto the spindle. It almost seems as though the spline on the spindle doesn't line up with the spline on the steering arm. Did they change this over the years?