Hello!! I have had my bike for 2 years and I am starting to train for a sprint triathlon. My bike has never had any kind of maintanence work done on it. Would it probably be a good idea to send it to the bike shop for a 'tune up' before my race?? Also, what kind of pre- and post-ride maintanence should I be doing?? I check the air pressure in the tires before almost every ride and add air as needed, what else should I be doing?? I guess since I've never had any problems with my bike, I've never really thought about what I should be doing for it. Any suggestions?? Thanks!!