Everything was fine and dandy until week 8. Last run and it felt as if my left shoe was worn out on the outer heel. Tried to change my gait so that it didn't feel so uncomfortable and pulled a muscle in my right calf! Went to shoe shop for new shoes and after watching me walk up and down a bit sold me a new pair of shoes (£120!) for my particular gait. But have just walked in them for a brisk half an hour and they feel the same as my last pair! As if they are worn down on the outer edge of left heel. Obviously it is not the shoe, it is my gait. So do I go back to shop (can't change the shoes though as I have used them now!)? Do I just accept that I walk/run funny, run in the shoes and get used to it? or do I try swimming instead? Any advice?