Ok, I picked up a "new to me" yz400. ON the bright side, it has never been raced. It was basically what I call a "yard bike". But on the down side, I am certain some maintenace was skipped. I know the oil was changed fairly regular, but that is about it. So far I have put new tires on it (it still had the stock 739s on it ) cleaned the air filter, changed the oil, checked wheel bearings, lubed axles, and checked spokes. Plan on checking valves soon, as well as lubing/checking steering bearings. Also plan to replace brake pads, and brake fluid. Anything else you all can think of that is maybe known to be an issue that might need checking. Things like CCT maybe?