I play an average amount, and I've been experiencing a sudden shooting pain in my left hand from my ring and pinky fingers to my wrist. After just a couple of seconds I can resume with caution, but it keeps me from building up speed and independence of those two fingers. My hands are small, but I experience nothing like this in any other activity, i.e. playing piano or typing. Am I squeezing too tightly, or is it my playing position? Anybody know what I'm talking about?