I see what you mean about the loose nuts - that couldn’t have helped. I’ve never studied mine that closely while being shifted but I’m kind of surprised to see a little movement of the rods in the transmission lever holes. Usually the metal Hurst bushing are pretty snug. Something I like to do also is put a thin shim washer on the rod under the “G” clip to take up most of the space to the clip hole on the rod. That cuts down quite a bit on rocking of the rod with respect to the lever and tightens everything up a little. I do that at both ends of the 1-2, and 3-4 rods. I figure reverse doesn’t matter that much.