I’m looking for help getting the right running shoe. I started running 3 months ago. I recently got tendinitis in my left ankle after I doubled my run from 3 mile to 6 mile one day, and the dr had me take a break from running for 3 weeks. I started back with another 3 mile yesterday, and it felt like it was happening in my right ankle this time. Does REI employ anyone with expertise in the area of correct running shoe fitment?