The 43rd Classic Motorcycle Racing Register is just around the corner in Pukekohe, and it’s joined by a 97-year-old rider who never stopped being young. Les Harris feels nothing but joy when he puts his BSA Bantum 175cc, a ride that can go up to nearly 130km/h. “I just have to be doing,” he told Seven Sharp, “I love doing.” As he rides a bike that’s almost 40 years younger than him, his son Tim says he likes to do his own thing and doesn’t like to be fussed over. “You can’t argue with his age and how he’s going, can you?” he said. Pukekohe is in Harris’ blood and…