I think you are taking this a bit too personal... and I wasn't saying anything about all combat tai chi styles, I was just saying that combat styles "tend" to have the knees extend further than the toes and I just supplied a few pics to back up my comments. I would think that everyone here understands that there are no absolutes when it comes to tai chi forms as the styles have been been changing and developing over time. Additionally, the people in those pictures could be "experts" or "beginners", it doesn't matter at all, it just shows that it is being done and I was just addressing that fact.
I would also think that people here would welcome a fresh set of thoughts and eyes, especially on a common concern w/ any martial art when it comes to knee problems.
As with any sign of respect for ones teacher (more so in eastern cultures than here in the States), I do not have multiple sifu's as I also teach Taoist Tai Chi the best way I can which is an art developed by Master Moy Lin Shin. I was lucky enough to study under him for a short time before he passed away and he is known and respected throughout the world for his contributions in building and founding temples in China, Canada, and the US. When I was younger yes I practiced other forms but for the past 12 years I chose to perfect my art of Taoist Tai Chi as best I could, and I volunteer my time to teach others that wish to learn, just as Master Moy did.
If my opinions are not welcome here, I will peacfully leave, but based on the discussions I have seen, you all seem like an open minded bunch.