I have an 87 XJ with the gm tilt steering column and have kind of strange issue. When its cold, it has a lot of play in it and is really annoying to drive but after driving it for a little bit, the steering tightens up and acts like a normal lifted vehicle gearbox steering. I have tried tightening the box which made it steer very unpredictably and still had play. After that I just replaced everything, it has a new box, new pump, new lines, the only thing that I didn't replace was the steering shaft itself but the u joint feels ok. I'm kind of at a loss at this point. It's too warm right now, but hopefully tomorrow, I will check if it is turning the shaft when it has play or not and maybe narrow it down.