68 Barracuda 225 to 440 to 426

I must have missed that comment. I have never experienced a loose fit. .Is it loose in just the tie rod end? Just trying to isolated the issue. Tie rod thread or adapter thread.
If it is thread pitch, you might try running a dye over the tie rods.
The rack and tie rod threads are tight. I screw them in and it's tight, no up and down movement. The one inch shock spacer the male and female ends are loose. The threads is not tall enough to take up the space. I believe thats called the pitch of thread. I took a video.