It depends on the hand size. Above all, I recommend not locking down all fingers - esp. in the open hand (4 finger) tech. It puts an unnecessary strain on the hand. I always prefered to "rock and roll" from pressure point to point. Half step pivoting can be used in the open hand or the closed hand (1,2,4) position. Try playing that low F and releasing the first finger, "R&R" to the 3/4 on G. If that hurts, try 1 on F and pivot (no shifting!) to a 2 on G.
And get to a specalist!
Tom Gale
ASODB.com
