I am trying to get a full 1 on the first two keys. It takes a lot of diligence to maintain both of the two keys shot after shot. So, the more mechanisms I have to maintain them the better.
Key 3 eluded me after having worked hard on all of them for over two months successfully, and I needed to go back to Mike and Dana to fix the problem with it. So, I am working on all three keys, but the one I want to get "perfect" is 1 for now.
I am in a similar position, but my main focus or the one I want to perfect is Key #2 and in particular getting the weight onto my inside right foot & left knee forward and down in the downswing.
You are right when you say it takes a lot of diligence. But it pays off.
My Monday & Wednesday range sessions were very good this week, I spent time in between shots working on the movement and the results were good.
The Tuesday was not as good, I think I got a bit carried away with Mondays success, I didn't put in the work between shots or take short practice shots, I ended up hitting twice as many balls with half the success.
Re your GIR's:
Are you taking enough club?
Last summer I found that I benefited from taking my yardages to the back of the green (unless it was a monster green obviously) and took that as my distance.
I went from leaving a lot short to increasing my GIR's almost immediately.
I am hitting at least one if not two clubs more on some holes than I used to.
My thinking was that I will rarely, if ever, hit an iron further than I think I will, but I will often leave it shorter than I expect.
If I'm taking yardage to the back of the green a good shot should hit it but a higher % of my bad shots will also hit it.
Most trouble on my home course is in front or to the sides of the green, I think the majority of golf holes are the same, so it's a no brainer for me.
Good question about the GIR. The issue is accuracy, I tend to spray all around the green. I prefer to comeup short than over hit them, but the shots are +/-5 yards about pin high. I get a quite a few that hit the green then bounce off. Something like 25% are on the fringe, 25% bunker or approach, 50% off line, but within 20 yards.