Honey just asked "what cha doing?" and I read him your story. He's been wrenching for more then a decade and is the manager of his family's shop.

He's never told anyone to tighten their pedals five hours into a ride. He says they probably aren't using pedal washers and now even though the pedal still looks good, it's not. He would have demanded all new parts.

Put some new pedals in there and see if the problem goes away.

Hope this helps.

Jeni