Drivetrain vibration

[dobie6982]

I just had driveline vibrations once I got up to about 60-70. I had the tires balanced and it didn't cure it. I checked my pinion angle and it was one up. I put in some 2 degree shims and removed the isolation pads between the leafs and axle. Almost all the vibration is gone and the car seems to handle better. My pinion is now 3 down. If that did not work for me my next move was having the driveshaft inspected. Do you feel the vibration in the seat of your pants or the steering wheel?