Just got the bike back from the LBS, rides like a champ. Shifting is smooth, brakes (BB5) feel solid, but the rear is singing to me the whole ride. Things look fine, but I am real new at this ( too obvious? ) I have done a few searches but have not seen a solution. Will most likely bring it back to the LBS on Tue, but if it is most likely something minor I would like to see if I can do it. Driving me nuts.