Yesterday I bought my first clipless pedals & cycling shoes. I bought Specialized shoes & Look pedals. I can get the right foot out fine but am having a terrible time with the left. I've already landed on my hiney once when the bike leaned left. The shop installed the pedal for me and I have no instructions. I know -- I should have asked. I was too busy trying to figure out how to use them on the shop's trainer. Anyway, do you adjust the pedal to loosen tension or the shoe? How do you make the adjustment? Thanks!