Dude, I still can't believe that happened. My heart dropped as soon as you told me that.
I swear on my kids that I had no indication of any shaft problems. No grinding, chattering, clunking, nothing. The kit was in perfect working order (to my knowledge) when I took it off or else I would have told you there was a problem. Even if there "might" have been a problem I would have been up front with you.
Anyway, I'm up to help in any way I can. Just let me know.