Amen to that...I have about 25 golf books which constitute about 25 different swing theories. I started playing at 40, Im 43 now and a about a 13 handicap. I figure if I'd gotten into TGM when I started out I'd be about a 6.
Just work on the swing that got you to a 6, that is a fantastic index!
Not sure i agree with the 'just leave it' philosophy. I would say make sure you know what you are doing with any changes, but there is always room for improvement...ask Tiger!