I’ve been experiencing a dull, somewhat tight pain in my power back/upper butt, right side, but only when I run.  I’m OK for a few minutes, but then it starts right up.  I’ve tried two new pairs of shoes, one “motion control” against my better judgement, and another a bit more minimalist, and both result in the same back pain.  Any thoughts?  Sound more like a form issue or an injury issue, or a bit of both?

Thanks all!