When I had ITB/TFL problems I had no knee pain but only pain in the hip on the top of the pelvic girdle. It was directly linked to poor quad strength because I have a 'pre-arthritic' knee. So I focussed on strengthening quads, foam rolling stretching piriformis etc and after a few weeks signs of improvement!
However, I then met an athlete who also works as a sports biomechanics (not sure of exact title) and he suggested strengthening glutes rather than quads and this has certainly helped more.
I have only recently started cycling but find after a cycle my running form is much better and no pain - even though I do a good warm up and stretch before a run by itself.
I appreciate financially there may be issues - but if you carry on without knowing 100% what is wrong you could be doing more harm than good. Do some places offer a discount for students perhaps? Good Luck though.
Having just ventured into the world of duathlon, my biggest problem seems to be the Garmin! I set it for auto multisport so that just the Lap button pressed changed to running, but then it only downloaded onto the old Garmin TC and not the current Garmin Connect.
On investigating further this seems to be a problem with Garmin 305's - I can't seem to export it from TC to Connect; and the download that you have to buy seems really complicated for my old computer (and brain) to deal with!
My only other option seems to be to change sports manually, but this seems to be wasting time doesn't it?
Anyone any thoughts or ideas would be much appreciated please! Thanks in anticipation