Roughness, Vibration or Body Boom Experienced at Any Speed

Rough rear wheel bearings.
Unbalanced or damaged propeller shaft.
Unbalanced or damaged tires.
Worn or damaged universal joints.
Excessive U bolt torque.
Bent or damaged drive shaft, or undercoating on drive shaft.
Tight universal joints.
Burrs or gouges on companion flange.
Drive shaft or companion shaft runout too great.
Drive shaft or companion flange unbalanced.
Excessive looseness at slip yoke spline.
Mis-indexed propeller shaft at companion flange.