You know, I wonder if what I've had all along didn't include a low grade bilateral SC subluxation. That's the only way I can explain the way the notch between my SCM tendons did NOT fall between the heads of my clavicles, for months. I kept pointing it out to every practitioner I saw and they just ignored it like it was normal ... but how could it be. My LMT got them centered within two treatments, but the head of the left one still sticks out ...