I recently purchased my first two road bikes from one of those LBS places that doesn't specialize in just bikes. Both bikes seem to have shifting issues and this place can't seem to fix them. My question is, what's normally done when assembling a high-end road bike? I'm wondering it it's worth taking both of my bikes to an experienced LBS and drop some cash to have them reassembled. The two bike are a 2009 Madone 5.5 and a 2008 Madone 4.5.