Yup. I agree, any tool that doesn't work properly has no place in any shop. There are advatages for the craftsman if he/she knows how to maintain their equipment, sometimes there is less downtime if you can fix it yourself and you don't rely totally on a repair shop, nothing against them at all. There is also a point of diminishing return on repairing equipment yourself, just because you can fix it or make it doesn't mean it makes economic sense. Being able to time, adjust and replace a few things can be priceless and a huge timesaver, but having a machine that requires constant dickering would be a huge cost in lost time and production which equals money.