Hi, I adjusted my rear derailleur according to the Park Tool Website, and then I checked the rear indexing adjustment. I attempted to tighten the rear derailleur cable by loosening the pinch clamp at the rear derailleur, but now after I did that and followed the rest of the instructions, the derailleur won't shift to my lowest (most inward) gear. What exactly did I do wrong and how can I fix this problem? I'm guessing that the cable has too much slack in it. Is that right?
Thanks for your help,