Well another person appears to be moving on. A friend of mine a long time Taijiquan practitioner appears to be moving away from her art due severe pain in her knees when practicing. Her instructor could not help her or would not help her try to fix the problem. (ie. system issues) So she is moving on. This has happened to alot of Taijiquan practitioner's that I know. Anyone else experienced this or know someone leaving because of knee issues and reluctancy of the system to allow them to change?