No personal experience, but I have a friend that has a 73 that he has owned since new. He has had chronic problems with the valves. They require constant adjustment (every 600- 1200 miles). The airhead specialty shop told him it is because of the material used for the valve seats and the lack of lead in today's fuels. they have the heads and are pressing new seats in for him. I will sat, he loves that bike as much as we do the Triumphs. It has been a solo bike, and a tug for a sidecar. He ebay'ed the s-car last week and is returning it to a solo bike and buying a s-car for his Roadking. He is a USA Marine helicopter mechanic from the Vietnam area that holds a MBA and a degree in History, so I believe him when he says he knows what he is talking about.
