When the posi is correctly tuned, you can move the posi into any position on the bench- up ,down, sideways, on an angle and the cross shaft should slide out in any position. There should be no lash and no binding.
69 SB 4 Spd Vert- under resto(sitting in my garage)
72 SB Auto Coupe- 355,TH400 336's (drive 1k miles yr)
75 L82 4spd Coupe- Gave to my son, the gearhead.(going to 12-bolt,3.5 shafts,& 31 spl axles)
67 coupe- gone but not forgotten.( like to get another one some day)