Well guy's I was out riding and noticed the back caliper was kinda skiping when I really hammered the brake. So I figured I would check the bolts to make sure they were tight. I went to tighten the back bolt and it broke off about half way..... I didnt' even put any pressure on it. Must have broke in there during the ride. ARRRRGGGGGHHHHHH i'm never touching my bike again in any mechanical form...........