Hi I am just acquired a a bike with a sti shimano sora flight deck gear shifter/brake handles. It also has a sti single button hood. I just got on the bike a few hours ago and I was able to use the left and right levers to shift gears... clicking it a few times until it would not click anymore on either side. I think the gears shifted the bike to that of least resistance. Now I am trying to figure out how I can shift to a higher resistance...please help!