I think it could be Johny Rodger from Paisley. He bought a bike from someone at Berwick ,or at least picked it up there, and on his first go on it rode it up the carpark and nearly wiped himself, and a car out.
There was a speedway video on a Glasgow web site, not speedway, and a rider was seen cleaning a plug using the tube method. I had to explain what he was doing and that he wasn't making rude gestures.