Is the 'Rocking' Ride Characteristic correctable?

[safecracker]

As mentioned above, the Spyder has a much narrower front wheel width than most autos. So it will wonder side to side on rutted and off camber roads. It is just the way it is.

 

[ThreeWheels]

JayBros
The rocking is more pronounced on older roads with a crown in the center, freshly paved roads are better. I guess this would be expected. It also seems more pronounced at higher speeds. Yes there is a bit of wandering right to left , but again the newer the road the less wandering.

Hands off at slower speeds, 40 mph, on good roads it does seems to track fairly straight.

I do use a pretty relaxed grip.

The bike has the stock alignment. The only thing added was the sway bar which did help.

Poasttown

I know I'm coming late to the party, but from your description it sounds like an alignment issue.
Also tire pressure is important. If you're running much more than 20 psi in the front, it can make the bike feel twitchy.