Not sure what else to try...I greased the neck, and the swing is close enough to the book. It rides great until highway speeds.

The weight of the tourpack loaded is the biggest factor. Without it the bike handles like its on rails taking 270 degree off ramps at 50mph with room for more.

What the hell is causing the Straight Line Wobble? Around 75 - 90mph. Brand new Metz 880's front is a 130 and the rear is 160...alignment was done and tied down right on 90 degree frame and rotors...after loosening the hiem joints.

again...letting go of one grip seems to calm it down.

 

Steering head bearing adjustment, not a big fan of metz.

 

Change tires. Seriously

 

I ran Metzlers on a 2004 ultra. They were OK, but seem to wear quickly. You need to run a little more air in them than recommended.

Check your front wheel bearings. Make sure the front axle nut has not been over tightened. As suggested, steering head bearing is suspect as well. Hope you figure it out.

 

Change the tires

 

A clue! At those speeds things get darned noisy and you are probably tensing your arms. Try a pair of ear plugs. They are the cheapest tuning aid known to mankind and you may find the speed at which things start to go wobbly is higher.

I seem to recall you mentioning you have apes? Do you also have a low windshield? If so your torso is acting like a sail, with buffeting adding to the noise problem mentioned above.