[MaSnaka]

TWood,
You might want to relieve the slip joints in the shaft and give a little slack so when it does get hot it has some room to go. I don't mean to leave them loose, just reset. With out seeing your set up...number of joints, pad block, etc. it's hard to diagnose. Are all the ujoints good? I don't think heat is the issue. It may be causing the problem but something else isn't right. My steering shaft is less than 1" from the header without any problems. Good luck.

John