Just bought a 2015 Ranger XP 900. Only have 3 hours on the machine. When I went to clean the machine after a short ride I noticed the top of the fuel tank was caved in. I opened the fuel cap and air immediately rushed into the tank. I checked the vent line and it will not let air in or out. Is there something the dealer was suppose to do to the vent fitting during set-up? Seems that the vent line is completely shut off, and now my tank is slightly caved in, it may be permanent. Suggestions??