There are several of us here that own Carbon bikes like the Ruby and some I'm sure that were sized wrong when making the purchase of a bike.

Without knowing your story, anyone with issues with a lbs is sadly at the mercy of the shop/owner, so unless you can get some resolution directly you may contact the parent company (Trek/Specialized/Cannondale) and see if they can do anything for you.

My short experience at one lbs was purchasing new tires for my Ruby. Manager assured me the slightly larger tires would fit. Three months later have bike in the shop and bike wrench guy asks about the tires saying he thought they were unsafe as too tight clearance... To which I say they were bought here and was assured it was ok. Now they won't return them because they're used, yadda yadda, but only will offer me discount on properly sized tires and to install for free. Needless to say I'm les then thrilled with giving this lbs even more of my money. Now this is 80-90 in tires, not a BIKE, but I can can commensurate on poor customer service and unwillingness to stand behind the advice and "expertise" they pride themselves in touting up.

Shannon