When you installed the TPS, you need to rotate it to get it on the end of the rod. (I don't recall the direction). The first one I installed I did just put it on so the screws lined up and tightened down. After repeated issues, the next one I bought, I put the rod end in first, then rotated it back to get the screws to line up and tighten down. Resolving the issue. If you didn't run it too much yet to strip out the plastic insert, try un mounting and re mounting it.
2004 Supra Launch 22 SSV
5.7L Indmar Assault
"One More Hour"