It's my fault...
Sorry, Guys.
Way back in '86 my new hardbody's shift knob would spin freely, and occasionally spin OFF as the stick vibrated going down the highway. I could tighten it down, but then the shift pattern was at about 160 degrees from upright. That royally confused my wife.
So I called my dealer, who simply suggested some tape on the shift post. They had no better fix for the problem. I wrote a long nasty letter to Nissan about the loose knob. A few weeks later I got a nice response with a free "aftermarket" knob that stayed in place with a set screw. They also explained that I had not been the only one to complain of loose knobs, and that they would be fixing the problem in the future.
I haven't bought a new car until my '02 Altima. I suspect Nissan heard I was going to, and securely mounted all shift knobs in all altimas to be sure the one I bought had a tight knob. So it's my fault. Sorry, Guys. ;-( And I bought an automatic.
OpalBlue.