Hey all...I have been feeling quad pain during my rides. crampy, tight, locking pain during longer rides. It usually starts on climbs and starts to hurts so bad I have to stop and let my legs rest for a few minutes. My quads lock up and my legs refuse to pedal. I have tried rollers and stretching out more often. I have also tried repositioning my seat and cleats. Any suggestions are appreciated. Thanks you in advance!!