Ive been having slight vibrations in my driveline over 65 mph. I found the problem. If I raise my front end 1.5 inches by turning the lower control arm adjusters the vibration disappears. I shimmed the rear end 2 degrees. The car is slightly raked toward the front. Telling me, my pinion angle needed adjusted. I take it for a several mile ride, come back and front end drops back down to where it was previously on its own ? I can crank it back up 1.5” and do this all day long, vibration disappears and then front end drops back down causing driveline to vibrate again, repeatedly ? I’m sure it’s torsion bars related. But, what’s going on here ? Nothing is broken that I can see.