For the record, this just saved me a lot of aggravation. My key has been stuck in the column for months. I was about ready to attack it with WD-40 and make a real mess. I thought my old worn out original key hadn't been duplicated properly and the new key just got stuck.
I guess the collar just turned around while I was driving and trapped my key temporarily*.
I guess it also means I have a 70 column in my 71. No biggie, just good to know these things.
*three months