If I were as consistent as Lee, I wouldn't be posting on here...
This thread is the result of a session on the range last night - my shots were an equal mix - well, actually biased more toward the miss left - of beautiful straight shots with a touch of draw and shots that started well left and finished further left. I had this problem a long long time ago (maybe 14 years ago) and I solved it at that time by doing the opposite of what seemed instinctive (aiming further right would be the normal thing, instead I thought of Freddie and his power fade and opened my stance a bit - worked great that summer, which remains the only summer I logged a decent number of rounds).
I did experiment a little with different stances and grips, but didn't achieve a clear result before succumbing to the heat and humidity. The one thing that seemed to work best was concentrating on loading the club a bit more at the top, after the transition (downcocking? float loading? can't remember what it's called), which would imply to me it was a face problem as opposed to a path problem, but I'm not that good at diagnosing, on myself or others.