Just picked up a Specialized Crosstrail 09' (Base model) for $250 used. Problem is the gears/chain has been slipping a lot, making noise as it goes around, and theres some rust on a few of the screws. I am just getting back into biking and noticed the price new on these bikes is $400-700 dollars before taxes, I had to jump on it. Good deal or should I have waited. Would a tune up solve these problems? The bike did not go through regular maintenance looks as though it has never been lubed up on the gears after being bought and never wiped down after being ridden in the rain. I am no expert but the frame seemed solid, brakes worked although the triggers seem a little loose, tires and rim looked good, and just a few scratches here and there. My biggest issues have been lack of smoothness while peddling it seems the chain does always immediately catch. Also I do not know anything about bike suspension but it does not seem to lock out and I am not sure how it is supposed to correctly feel. How much is repair going to run me? Can I make this bike like new (performance wise)? Thanks for any info.