I don'tknow what happened, but I think the bike shop had a rookie mechanic do my tuneup a few weeks back. First I noticed the shifting wasn't ver precise. Then today a spoke lets go as I get to work the rear wheel is rubbing like CRAZY! The spoke just won't tighten. I think I'm doing everything right, but it just won't stick.
Which spokes should I adjust to compensate? I have a 12 mile ride home before I can get to bike shop!