So I finally measured my driveshaft angles. I have a slight vibration at about 50-60, not bad but noticeable. I have boxed the frame and put the newer body style cab mounts. My truck is a Centrurion 1997 ccsb. The angle out of transmission is 1.8 down, the angle on the pinion is .2 up, so do you think I should shim the carrier bearing a little more to try to make both angles around 1* each?