If you are able to run at min. then check out running and film on treadmill from sides, back and front.

Look at obviouse things first..
*foot positions, heel strike / toe off
*rotation of limb, below and above knee
*stride length
etc..

Also look at...
*belly button movt. (can give indication of compensation)
*arm, shoulder, neck / head position and fixing of
*lumbar spine, creases and movt. from centre

If not already looked out check - out route you run...camber, hill (lead leg)
- shoe wear pattern etc, your orthotics
- lumbar spine

Important to ensure able to dissociate lumbar from hamstring movt. (kinetic control work good for this and getting good control of firing pattern of gluts. etc)

Glut. med work...starting side lying, often those with tight ITB tend to over use TFL when doing this, make sure you are using what you are meant to....may need to look at high and low threshold activation and control (compare side to side), this can be progressed obviously to standing / dynamic ex. Kinetic control is again good for this

Don't forget to check neural structures, mobility of nerves etc..

Good luck.