I'm new to cycling and new to the forum and would appreciate any advice on my brake troubles. I recently purchased a Schwinn Supersport DBX. It's a road bike but it has avid mechanical disc brakes. I bought it mostly for commuting but intend to do a century ride on it in late October. Anyway, I get a lot of drag noise on the front brake unless I tighten the quick release lever to the point that I neet a screwdriver or something to loosen it. I've heard that a little drag/rubbing is normal with a new bike (this one has about 600 miles on it) but I'm wondering if it's ok to torque down the quick release that much or if my brake is mis adjusted.