It Don't Fit!

So the first of the two '68/'69 Camaro tie rod ends arrived tonight. The first thing I did was try on the jamb nut supplied by Flaming River in the hardware kit. It fit perfectly! Then I put the end of the tie rod up to the rack tube and... drum roll... It slipped in and out without threading... just slopping around loose like. BOO!!! Two thumbs down for Flaming River's Tech support. It seems the next size up is probably 11/16" and that seems like it's a Mustang part, not a Camaro part. Could it be the wrong rack was included in the kit? I'm going to be calling them in the morning. 

Ugh!