Without seeing your swing it is hard to give advice of a specific nature.
Try and go back to the basics
1) Grip - is it too strong or too weak. check the lesson section at this site on the grip
2) Alignment - are you aligned properly remember the railroad track concept. Feet aligned with the inside track and club aligned with the outside track. In general, tendency is to align the feet towards the target line instead of parallel to it. If you do this correctly, you may feel as if you are aimed left
3) Stance - May sure you have enough spine tilt at least 25 degrees, buttock extended over the heels and slight knee flex. You may feels as spine is too close to the ball. However, maintaining the spine flex will help you to swing the club more lateral than vertical, helping you to get your shoulders behind the ball. In a reverse pivot, the swing is often too vertical and your shoulders end up ahead of the ball, which requires all kinds of compensations on the downsiwing. You may need to have somebody watch you for a while to make sure your shoulders end up behind the ball.

Hope this helps.