during the backswing my clubs gets to far behind me and i cross the line at the top of the swing. how do i get out of this bad habbit?
1. Make sure you are aligned to your Target. Your Stance now is almost certainly Closed and you are aligned some 20-30 yards right of your target. It's not a matter of eyesight: Your Computer has learned to do this because your defective Machine hits the Ball left. That happens because, for a variety of reasons, your Left Wrist is Bending through Impact. Also, your Right Shoulder on the Downstroke turns back to where it was at Address (Off Plane) instead of toward the Ball. And that is because you have no Hip Slide -- Axis Tilt -- in the Start Down.
2. Point your Clubface at the Target Line during Start Up. Stop at the end of this Section of the Stroke -- Clubshaft still below the Hands and at about a 45 degree angle to the Line -- and make sure this is the case. I suspect your Uneducated Hands have already pulled the Club well inside the Line.
3. Feel as though you have Zero Wrist Cock well into the Backstroke. Your Left Wrist is no doubt way over-active and is twisting the Club well inside in the Takeaway. Your Right Elbow is slipping back and behind you instead of stretching the Left Arm and extending the Club down the Line.
4. Feel your Right Forearm taking your Left Arm and Club back from the Ball in a wide arc. Keep your Head Stationary and S-t-r-e-t-c-h! Minimize Shoulder Turn activity. Stop half-way back (Club parallel to the ground) and make sure the Club is also parallel to the Line.
5. Don't go back so far. Your Left Arm is probably well bent; your Right Wrist is probably Cocked; and the Clubshaft is now past parallel and dipping beneath the horizontal. Instead, stop at Top (Right Shoulder high and On Plane) or just a bit beyond. Do not let the Club go past horizontal and make sure your Right Wrist is only Bent, not Cocked. Keep your Head Stationary and continue to feel your Right Triceps Extensor Action stretching the Left Arm and Club out in a wide arc.
6. As an overall feel, sense the Straight Plane Line and keep all motion parallel to it.