drive shaft alignment problems

[captain69]

So I took the truck out for its maiden beating and I can feel the trans or the drive shaft almost step out every once in awhile. Im not sure if its the locker in the rear end but its real bad with a little gas and taking a corner. I tried the trans brake and it almost seemed like it was in nuetral when I let off hope I didnt smoke the converter. Can some one show me a pick of there auto tail shaft height. I think the rear of the trans needs to come up.