Hendrik,
With all this endless talk about Emei, Snake and Crane I'd like to ask you a very straight up and simple Question:
1/. If these arts (Emei/Snake/Crane) are the engine and DNA of Wing Chun why not simply study one or all of these arts to take your Wing Chun back further to its source?
2/. What White Crane specifically have you studied and with whom?
2/. What Snake form Gongfu have you studied and with whom?
3/. What Emei have you studied and with whom?
In anticipation I look forward to your straight answer.
Thank you!