Your mechanics are not that bad. They're easily good enough, given your swing speed, to shoot in the 70s the vast majority of the time.
If you want to do something else, then set up normally and have a buddy tell you "left, right, or straight" mid-backswing. Or "slice, hook, or straight" mid-backswing.
But not at higher speeds until they're solid.
I mean, you're always welcome to come over for a visit and some work. It's been many months, but again, I'm trying to simplify for you as you've gotten in a bit too deep, generally speaking.
I'm surprised as hell - honestly - that not one person has mentioned that it's annoying when someone watches you putt from the extension of your line of putt behind your ball. And nobody's pointed out that they didn't realize this was legal, and that they thought it was illegal for a fellow competitor to stand there.
I wonder if you're all picturing 25 or 30' as farther away than it is, or something.
Because it's a bigger issue generally speaking than people here have indicated. Now, we surely have a higher educated brand of golfer here, but still… I'm surprised.
Kids now have it great. When I was growing up in the 70s, most courses around here wouldn't let kids play. When we'd go out I'd pull one of my parent's carts and after the first hole, my dad would throw me a ball and I'd have to use my mom's clubs since they were shorter. Now there are kid's clubs out there that cost more than my sets.