Need Ping guru help.

First off, Hi! New to the site, long time golfer.

I have been playing Ping I20(green dot) irons for about 7 months, prior to these, I played Ping G2's(black dot). Spent the entire time working on "adapting" to the I20's

My iron game has been all over the place, more recently I've developed a pull/hook, most shots missing about 20 yards left. Have also struggled with toe hits, though most of the toe hits would at least fly straight, flush/center hits...left.

Today, I decided to dust off my G2 7 iron and took it to the range with me. Immediately flushing shots with it, ball mark dead center, felt like hitting a stiff, golf ball sized marshmallow compared to the toe hits off the I20's

I switch back to I20, make the same swing, still out toward the toe, and a good 10-12 yards less than the G2.

Now I know the obvious answer is to go back to hitting the G2's, but I would rather figure out what is going on with the I20's

Is there really that much difference in the head design, shaft flex or both?

any clues?

Did you get fit for the green dot? If not, they could be too upright. A club too upright will produce left misses. I used to play black dot, and played a big right to left shot. I got fit for red dot, and for a while, I hit everything right because the ball was going where I was aiming, and not curving.

Could be just operator error. I found that using new or different clubs caused me to swing harder or differently. Second, you did not say what the shaft difference is and if your cap is accurate, I hope that you are not having a ton of mishits. There is considerable difference in head design and as far as forgiveness on miss hits although the I20's are still forgiving.

Did you switch from black dot to green dot on purpose?

Switched based on the fitting session prior to buying them, but I have made some swing corrections since. The fitting recommended more upright lie based on the sole tape and marks left from the lie board. Seemed to work at the time, but I do know my game had considerably gone south after I'd eliminated what used to be a controlled fade.

Just walked in from the course, took my old G2's out and didn't hit a single pull or hook. Shot 77, down from 89 last time out with the I20's and lots of missed greens and a few tugs into the water or OB.

Thinking I'll be sending them to Ping and adjusted back to black.

The G2's have the old style Tru Temper 'R' and the I20's have CFS 'R'

Cap is according to about a years worth of scores kept with GolfShot

Absolutely

Kudos to Ping for a fast turn-around time.

Clubs arrived yesterday, was looking forward to hitting the range this evening but the weather just took a turn.

So I put 3 rounds and a couple range sessions through my freshly bent i-20's...

Perfect. I can't explain or understand why, but the first thing I noticed after several swings was the club appeared to lay better, making it much easier for me to get lined up.

So far not a single left OB shot.

I'm back to making contact more toward the center, and solid. My 20+ yard left miss is gone, in fact, I'm having to retrain myself to not aim/line up so far to the right.