My brother had a Lotus Cortina before I was riding. I remember it had a really bad shimmy, but probably just needed the wheels balancing. I like the Volvo too...........but not as much as the NF which is far more interesting than both of them together IMHO.
It will be interesting to hear how you overcome the issue and get it back on the road. It's not a freeway bike, but few give quite as much pleasure.
BTW if you haven't stumbled across it, Leafman's Nuovo Falcone thread on ADV is a going concern, with lots of good information, ideas, some trip reports and encouragement. It starts
here and carries on for 125 pages (of which the last is the most recent).
Good luck
Nick