vibration...but not always

hmm.....just got done for the night....i'm working on a panel for the former rear seat area.
while i was out there, i got out the angle finder.....seems the S/S springs took out the 5* i put in when i welded the perches on in the winter.
had zero degrees with the car sitting on all 4s. i had some 4* shims on the shelf and put them on though, so we'll see how it does tomorrow evening on my way to work.