None of the joints are too tight as they are firm but not impossible to move by hand or small tools. The problem did not start with the GN box as I've swapped the gear box from the 71 GS 350 car and have similar issues. I can't say when it started or that I'm just sensitized to it now. I do think the 71 car drove better but is has new ball joints, new tie rod ends, new quick ratio steering and new upper tubular arms for improved caster. I think I'll pull 1/8" shims from the back on the left and see what that does as an experiment. That should remove some positive caster and put camber nearer to 0°. Take it for a short drive and see how it drives. Surely, it isn't bump steer? I've felt that and it is felt when I have to correct steering in a corner due to a toeing in-out for a dip/bump, not correction on straight roads. Frankly, that looks like more than I'm comfortable or have the tools to do. I don't think that is the issue as I only turned the top adjuster a small amount to see if it helped.