Crash Landing,
I have afew questions about how you are addressing the ball. Where is the ball positioned in your stance? More towards your left heel, right heel or in the middle? If you set the ball in the middle of your stance for each club, you will become much more consistant. Once you get consistant, then you can start experimenting with moving the ball in your stance.
Also, are you moving the ball away from you as the
clubs get longer? Chances are that this is your problem. Position your club behind the ball and get into your stance. Do NOT grip your club, but just let it rest in your palm. The sole of the club should be flat ad the face should be facing the target. Your left arm should be hanging loosely , palm facing upwards. The butt end of your club should sit on the heel of your hand. Once you get into the correct position, then grip the club.
Keep us updated of your progress!!