Are your knees the same height? I have a similar problem with my left leg being shorter below the knee. I compensate by adjusting my shoes to make my legs as level as possible. I take the insole out of my right shoe and add insole to my left. (Before anyone suggests orthodics, if my left leg would keep its adjustment I would not have this problem)
The problem affects my right IT band especially from extended walking.

oldokie's suggestion is a great one too. Some crank arms are available in 172.5 mm length also.