Gearhead,
what you described in tight turns describes it well. It seems to be effected some by front tire pressure but it doesn't go completely away by any stretch. I've checked my steering head bearing and it seems OK. It did get repacked approx. 8,000 miles ago.
I also have a bit of wobble around during a limited hands on the bar decel at somewhare between 35-45 mph. I'm nearing time for a new front tire and hope this may help that some. Plus I jsut keep my hands on the bars but it sdoes get a bit squirrely if I don't have them on there.
Bob