Vibration.....Driveshaft?

He absolutely was not correct. Maybe he was talking about something other than driveline angles? Search the forums for a nice short YouTube video that explains the angles and how they relate to vibrations, etc.
That is a little encouraging, since the guy told me that I have put changing the pinion angle to the bottom of my todo list. I did measure everything a couple of years ago and if I recall I was out on the pinion by about 2 1/2 degrees...can't remember which way. I will look for the video.....Thanks.