The "classic wheel wobble" which is even discussed in the MSF training program, is a side to side shaking of the front wheel and handlebars.
It usually occurs only at a certain speed, and you can not steady the bars with your hands. It is like some invisible gremlin is fighting you with the bars.
It starts slowly and picks up frequency if you continue accelerating. Your only recourse is to slow down. It is very unnerving.
My Yamaha 850 was prone to do this at about 70 and it was due to the dealer installed Windjammer fairing that was on it. If I got caught in a particular kind of cross wind it could start. But there are a few different reasons for woblle
It really is more related to the steering and alignment than the wheel. It is not inherent to the Savage40 design, which is why I asked about changes to the bike.
Here is an interesting discussion about it. Might give some ideas for where to look.
http://www.msgroup.org/forums/mtt/topic.asp?TOPIC_ID=3063