You're coming up with some lovely Norvins David, particularly the 'Oldy' at Ramsgate.
About 20 years ago Tony Skipper kindly loaned me a Norvin to race at the Pukekohe Classic Festival. I rebuilt the Manx ratio gearbox, suspension, gave her an engine check and general freshen up as you can see in the photos attached. The road-based wide-line frame gave plenty of feedback - read it wobbled and weaved on the bumpy straights but gave plenty of control drifting around the corners. For the first two laps it would stick with the disc braked triples but after two good hairpin stops she had no brakes. The oil return pipes came adrift during the last race of the weekend and leading the pack for the first lap got fully crossed up as the back end tried to pass the front at high speed with oil on the tyre. I hung onto full throttle in 3rd gear as I was sure it would high-side but had to look to my side to see where I was going to crash as the bike had swung around 60+ degrees to the direction of travel (or so it felt). The pack behind scattered, expecting carnage, but divine intervention keep me upright and alive.
After the race, while I was emptying my leathers, one rider came up to me and said he had never seen so much white smoke coming off both tyres with the rider still in control! I was too much in shock to tell him the truth.