4x4 steering issue - won't return to center

[Pick8208]

I had a similar problem in my ’72 K10 after installing new ball joints. Had two shops look at it because of how alarming it was to drive. But after putting miles on it, everything settled in, the ball joints loosened up a little, and the steering started centering like it should. Maybe you've got something else going on, but I wouldn't be surprised if it settles in over time.