The Ready State Virtual Mobility Coach is like having a virtual Kelly Starrett in your pocket.
of course keep at it – trying to diagnose from a forum post is hard. keep working the ankles, the posterior part of the lower leg – calves, heel cord. you can also practice the end range position by using a support like a band tied up high, or a pole or door jam. you can also hold a KB out in front of your to help counterbalance you but i would only descend to where you can maintain good back position.