Guess on the cause of these symptoms?

There was one more thing I noticed that I forgot earlier.

I was checking the linkage and making sure everything was tight, and when tightening the 1/2 shifter tab nut on the stud I could move the tab/stud one position further towards the rear of the car this would cause the shifter to lock until I manuualy moved the tab back one position by turing the nut on the stud counter clockwise with my wrench. Does this sound normal?