9/16" tie rods, Fast Ratio arms, etc...

I wonder if it would help to weld up the wide open section of the sleeve between the ends of the tie rod shafts. Maybe leave 1/2" or so to allow adjustment.
I know there are guys like me that love to tinker with stuff rather than to just spend the money on new stuff.
Just buy the solid sleeves if your going to do that. You will need to have LH and RH threaded jam nuts if you weld them up. Solid sleeves come with jam nuts, plus the split sleeves fit loose until you clamp them down. If you weld them up you cant get rid of that.