Thanks for the response. Yes it's a pretty big difference. I think it was from a broken leg I had as a kid. My wife runs an alterations store, and the first couple times she did pants for me was amazed at how they came out looking bad, so she measured the pants and discovered it. (Normally you want the pant legs to be equal.)
So something like standing at attention with feet in place was always uncomfortable, but it seems to have gotten worse recently. I found these that I'll try to see if it helps at all:
Wharton's Simple Solutions | Runner's World