[sfont66]

Originally Posted by Richard

Your current working angles are fine, actually real good. The 3 degree recommendation refers to the working angle of joint not a transmission, driveline or pinion. Your working angles are pretty close to being within 1 degree. Typically the pinion should be down 1-2 degrees to allow for wrap under acceleration.
Unless you have a vibration there is no reason to do anything.

Thanks for your reply
I only have what could be described as a very slight vibration while cruising at 75-80 in 6th gear. It’s possible it’s not even drivetrain related. I haven’t driven the truck for 5 months now(winter weather) and it will be another month or two before I can do so again, to investigate further.