I don't know if it is the weather warming up or what, but some people seem to be getting a little snippy. The uo-8 is a perfectly fine bike, but those plastic derailleurs are crap if they are even a little cracked they are prone to fail. if you go on Ebay you can get a quite nice set of better derailleurs for not much money. if you do a google search on bikeforum vintage derailleurs you can make a pretty educated decision about what the people here like for a great price.