So I've been doing tons of research in order to make my squat as CLOSE to perfect as possible. Lately Ive been running a 5x5 program for the last 6 weeks and it actually has helped my squat quite a bit. But the biggest concern I have, is since I took my stance closer and started doing almost an "olympic" style squat, I get pains above my glutes, basically the back side of the hips. Upon investigation of my squat with a video, which I posted in another thread, I noticed I have a "butt wink".
According to the video "So you think you can squat" with EliteFTS, you should first arch your back and sit BACK to initiate the squat. But according to other videos, they initiate both at the same time.