Odd shifter problem, need advice

Uncle Bob said
The levers are centered as good as they can be both at the transmission and the shifter using a rod through the centering holes.

I noticed a lot of slop in at least the reverse side of things. There were about 5 turns of range on the reverse rod and it would still fit on both ends. I put it in the middle of that.
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My 833 in my 69' Dart (photo) had the same issue. SLOP!!!!! I bought new rod bushings and spring clips, along with adding an extra shim or spacer in the Comp-Plus shifter box. That was 36 years ago and still shifting great. The shifting rods (all) need to be in the correct position for a flawless shift.