I have a 1980 Univega road bike, which has been hanging in my garage for the past 15 years. I bought it new in Pacific Beach, California for $200, which at the time I thought was a hefty price. It needs new tires and probably a bearing overhaul. My question is: it has SunTour deraillers, which seem to work fine. Are these any good, considering when they were built? This bike has a good rust-free frame, and stainless spokes. Do you think it's worth putting money into it and getting it going again? This would serve as my back-up bike, and would be available for out of town guests.