Just got a Jamis Quest today with Shimano 105 components for a friend and it will not settle in on the 4th gear up from the smallest. All other gears work fine but the 4th position is hideous and wants to ride down to the third. I have tried all types of tension adjustment and nothing seems to work. The bike is brand new out of the factory box and is a 10-speed. Any ideas what the heck is going on? And yes I did re-tighten the the skewer on the rear wheel thinking it was maybe not set in position correctly.