After researching here, the ABBike board and Wyzards forum I found all the info I needed EXCEPT the size of the nut under the handlebars.
Today I torn the front end down and fixed the loose stem bearing. I turned it almost 1/2 turn and that has totally elimated the shimmy on both accel and decel. I can actually set the cruise at 40 and take my hands off the bars. Never been able to do that before..
Anyway the reason for the post was to list the tools and sizes that are needed to do the job. Maybe by having them in one place, it will help someone else.
1 - phillips screwdriver to remove the cover from the switch
2 - 10mm socket to remove the riser covers from the handlebars.
3 - 12mm box end wrench to loosen the triple-tree fork clamps
4 - 27mm socket to loosen the large nut on top to the triple-tree, below the handlebars (this is the one I couldn't find a size for anywhere else.)
5 - long flatblade screwdriver or other flat piece of steel to hook into the notch on the steering stem nut (just below the upper triple-tree)
6- hammer to hit #5 with
The whole procedure took about 45 minutes and 1 cool beverage. A second set of hands to hold the handlebars up a little would be very useful
All in all, a pleasant repair with a very positve result. I'm very happy
