I'm one of those late 60's geezers who doesn't really care to do himself any more. I have taught a lot of young guys how to do it over the past 45 years, but I just don't have the energy any more. I don't have anyone at my shop that really knows how to change tube required tires, but when they are on my payroll, they do it with my supervision. We don't have a tire shop around that will tackle them any more.