Thanks again. They say to do it in D (I'm PRN123) but I had planned on checking P as well. What I've yet to grasp is how to remove the slack, but hopefully that will be obvious once I get the cover off the shifter assy.
I would think if it's dead-on in P and D (being both ends of the range), it would be good for the other positions, but I understand your point, and will check every gear. Don't know how each position could be adjustable, though.