Im new to this sport. Been riding two years and wanted to buy a CF bike. Bought a USED Trek Madone Pro 5.5 on-line. It arrived with three distinct cracks in the front forks where the aluminum wheel lugs join the CF. See pics below. There are three cracks where the aluminum joins the CF by the wheel lugs.. The seller assured me it was a crack in the paint and that a Trek rep had determined it was safe etc. My Trek dealer here won't assemble it saying it is not safe to ride. How can I determine who is right? Can I just buy another Madone fork? Where? Or can Trek replace it since I'm not the original owner. Any direction is greatly appreciated. Thanks.