Watching yourself doing squats...I'd hate to see what I look like spinning.
You do your lifting in a home gym? You seem to have your technique planned to a science
Yes, a home gym. I built a squat rack out of 4x4's and 1" black iron pipe for the safety bars.
I used to go to snap fitness which was open 24hrs. I had a friend there that I would see once or twice a week and he had his degree in sports training.
When he found me I was doing squats up on the balls of my feet and could only manage about 185lbs. The day he straightened out my technique I immediately was able to squat 275, and then when I put a belt on it went to 315.
Plus a whole bunch of youtube videos by Alan Thrall, Eliot Hulse, Johnnie Candito, bodybuilding magazine and others that have been able to improve my technique and training and give me ideas on how and why to do certain exercises.