Well after installing my 3deg shims yesterday, im still having a funny little resonance/vibration at around 30-40mph. What exactly do you guys consider driveline vibration? If its really driveline vibration that im having, are you supposed to feel it in the steering wheel as well? At those certain speeds (30-40) i feel like a resonance in the cabin and the steering also vibrates. Most people here say driveline vibrations are felt more rearward and are louder. What is the deal? I checked my front U joints as well as the rear and there is no grease showing from either u joint. I do have slight up/down play in the front driveshaft coming out of the Tcase and the front diff as well. I think this is normal though. What is driveline vibration? Do i have it or am i just thinking too much. By the way, my pinion angle is straighter then straight now.