I got the golfing machine book several months ago and it correlates well with what my GolfTEC instruction teaches.... so I have been practicing the flat left wrist, clubhead lag (forward swing bottom) and correct plane in my basement for a couple of months - I finally get out to the driving range and seem to have a significant problem hitting the ball too low- it takes off well with lots of spin but stays low and does not achieve a normal distance - with Ben Doyle's admonition you can't have too much clubhead lag and Bobby Clampett forward swing bottom of 4 inches, I was suprised this could be an issue - any advise? How do I know the correct downward angle of impact?