[jakeru]

I tore into my shift linkage "contraption" yesterday. (It was easily accessible from the rear of the car after removing a heat shield). Although I didn't find the loose-fitting ball stud that jcslocum showed in his video, I did find some "racking" play in the bellcrank pivot bushing. (You can also see this play in jcslocum's video if you look closely.)

I removed the contraption from the car and disassembled it, and found an undersized bronze bushing and/or worn components in the bellcrank pivot were causing the play. (Also, I noticed that any original grease that must have been there was long gone, and all that might have once been grease there was now dry and crumbly.)

After refurbishing the bushing and regreasing it, all of its play has been removed, and it should operate well.