Charlie -
As I said, getting an NTS level means next to nothing, IMHO anyway. The only real solution, again INHO, is to join a club or go to a range with a Trad or an Olympic contingent. Yeah, it might mean a few hours on the road a couple of times a week.
Once there, there will some good shooters, some not so good, and a few guys that most people go to for advice. Usually they are the guys pulling most of their arrows from the middle of the target with one hand.
Start talking, some guys charge for their time, a lot don't. I've never charged anyone for training or coaching.
A couple of things to watch out for.
1. There's no quick fix. If you think some one is going to tell you to do something and after doing it a few times things are going to change - it ain't gonna happen. It's a process.
2. "Intermittent" usually don't work. Even with the best advice, left to your own devices, without supervision, odds are you'll revert to to former habits.
3. Fix what you've got or start from scratch? With most "experienced" shooters, I don't try to reinvent the wheel. I try to find their biggest problem, fix that and move on. Rarely do I have to go back to ground zero, but it does happen.
4. Be open. The odds are you'll be told to do, or try something that's foreign to you, or you just don't want to do. It might be a lighter bow (as in stupid light) or even a temporary sight. Give it a fair shot.
You've taken the first step, so congrats there! We can talk more if you like.
Viper out.