Skimmed through the thread and seems most recommend stretching and rolling. Like someone mentioned, IT band pain comes from weaker supporting muscles. They tighten up and squeeze on that band, causing it to have less room to move around, and it pulls from under your knee where it connects Ive personally dealt with IT band issues and helped 10 other guys in my unit.
The stretching and rolling will help but technically you arent even putting a dent into your actual band but into the muscles surrounding it, hoping for it to ease up.
Continue with the stretching and rolling, BUT religiously work on these exercises daily. I had good luck with a session in the AM and in the PM.
Get a Small band that isn't too strong for starters
1. put both legs into it, keep band ankle high. knees bent at roughly 45 deg, and take 10 steps to the left and 10 steps to the right. Known as monster walks I believe.
2. Lay on the unaffected side, knees together, and with the band around your ankles. And lift your top foot up against the band. 10-15 of these. Known as a reverse clam.
3. Lay on the unaffected side, knees together, ankles together, band around your knees. Lift your top knee while keeping ankles together. 10-15 of these. known as the clam.
4. lay on unaffected side, no band. Hang your top leg slightly behind yourself. Use your heel of the top leg to write out each letter of the alphabet in the air. Your whole leg should be moving around/floating as your work through it. This one gonna get you the most.
Do 3 sets of this in the AM and PM.
For the exercises where you lay on your side, make sure you are laying on your hip and not slightly facing up. Your body needs to lay perpendicular to the floor. Don't cheat yourself.
For numbers 2-4 i recommend doing the other side too for balance.
Im not a doctor, pt, or anything. Just the team medic back in the day and struggled for a good bit with this problem. This regiment was legit the only thing that helped. I even had my IT band scraped at one point and while it did help initially it all came back shortly after wards. This program was the only solution that gave lasting results. Within a week was feeling better and after a month or so, everything was completely gone. No drugs, medications, etc.
but I've started a strengthening program primarily body weight as well as some targeted stretching to try gain some mobility and release a fee tight muscles that are clearly guarding. 
