Set the pinion angle 2-3 degrees down from the angle of the transmission main shaft centerline, with the rear end supporting the weight. If you do it just hanging, the angle will be wrong. I get to buy a set of 6 degree wedge plates to correct my pinion angle because I got in a hurry and didn't have weight on the axle. Yea, it changed that much from just hanging to having the chassis weight on the axle! Gene