Duffing ... so you're hitting it fat, right? Hitting behind the ball, digging up turf before hitting the ball?

When you do a lot of pump drills and RH drills, you are enhancing your inside path to the ball. Coming from the inside always mean coming in shallow (compared to coming in from the outside, anyway).

If you come in shallow, and have no weight shift, you will have a tendency to hit behind the ball. (I've been doing this exact same thing the last month, since my pro decided to put the ball more forward in my stance to force my weight shift).

Try to make a slow backswing and the start the transition by pushing your hip along the target line towards your left foot before it begins turning.

You will find that it opens up a nice a wide gap for your arms and lagging hands to drop into, keeping that nice and tight inside path to the ball.

As mentioned, I struggled with this problem for a month but it will eventually gel and you will be hitting it ultra-crisp.

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//Mox
2008 bag:
Mizuno MX-500 460cc 10.5* Fujikura Tour Platform 26.3 stiff. (about to be replaced by MP-600 10,5* UST Proforce V2 stiff)
Mizuno F-50 3w 15* Fujikura Tour Platform 26.3 stiff.
Wilson Deep Red 5w 18* Graphalloy Fatshaft stiff
Cleveland HALO 3i hybrid 22* graphite regular
Mizuno MP-60e forged 5i-PW True Temper Dynamic gold R300 steel
Mizuno MP Black OX raw haze 50/6 GW, 54/9 SW, 58/10 LW
Heavy Putter B3-M
Titleist NXT Extreme