Thanks Steve,
Yeah, it’s a twist lock – a light tap with a flat-head screwdriver and rubber mallet turned it easily.
Dropped off the tanks and the three connecting tubes to a local radiator shop (they do a lot of motorcycle tanks). Should be cleaned and coated by next week – assembly should be easier, the rubber hoses and gaskets arrived, and hope to have it all buttoned up for the Taste of Britain car show (Lancaster, PA) on August 22nd.

Black "66 Series V