A common problem on the 740 when doing a front end over haul using the polyurethane bushing set ( "cone bushings") where the diagonal strut rod meets the control arm is that the stock bolt in the suspension is too short to engage the threads once the PU bushings ( they're thicker) are installed. If you happen to be changing your ball joints at the same time, you're in luck. Rather than running to the hardware store for a longer bolt or removing other suspension bolts trying to find a longer one to get things started, just use one of the two bolts that held your old ball joint in place. Perfect fit! Found out, as usual, by accident after screwing around for an hour.

bl