Ok, the front tire is a distinct possibility because I'm running a D220 which was probably not designed for such a heavy bike. Also, socaljoe mentioned the rear tire and yes it is toast, I'm replacing it next weekend.
I just don't see the stem bearings being worn at 9k but I guess it's possible. The main thing is this is ok as long as it doesn't turn into a hands on high speed wobble correct?
Yea I ran a pair or Pilot Power sport bike tires i had in the garage on my C14, they were soft so they cupped in no time. I still wore them all the way out anyway, which was about 3000 miles.