With the column U-joint lined up with the press-pin hole, measure the distance between the two joints. Approximately 7/8 inch of the shaft should fit inside the joints. Be sure the shaft does not stick through the joint or it may bind later. When you trial-fit the shaft, tighten the setscrew against the steering shaft to make a mark. Remove the shaft and drill a divot into the shaft. When the shaft is ready for final install, tighten the setscrew with red Loctite applied, and reinstall the press pin.