hey guys, just installed my new 1350 cv rear driveshaft with 120 wall tubing,and vibration is worse than the stock driveshaft. I'm running an sm465(rebuilt)/205 (getting rebuilt right now)/12 bolt (rebuilt),and HAD 1350 cv w/1310/1350 rear u-joint/ 5'' lift/3.73 gears w/33" bfg's. I took it to a drivetrain place and they noticed that the rear output shaft in the tc had some play in it ,so I took it over to the tranny guy and it is in the process of being over hauled with new bearings.HOPEFULLY this will take care of the problem. Also wanted to point out that the rear pinion is correct with new shaft @ 2* below angle of driveshaft. Is there anything i've missed?I've got faith in Jess , but lack faith in UPS.