Bought my caad8 in Feb and tonight noticed one of the 4 small bolts holding the bars to the stem has sheared in 2 leaving half the bolt still in the threads. Anyone know if guarantee will cover repair? Bike was ordered online and delivered hundreds of miles away unforunately...I know, should have bought locally. Bike has also developed chain rub on the front derailleur again and no amount of turns on the adjustment screw seems to help. Begining to wish I'd stayed with Specialized. Any advice welcome.