X-MAN,
I know what you mean. I have "tennis elbow" from playing badminton some many years ago. I only get pain in bowling now when I try to over power the lanes. If I remember to maintain a smooth free armswing, I can bowl whole day long without any pain.
What I found that helps is a good thumb fit so I do not have to muscle the grip.
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baiki
"Faulty mechanics makes all balls bad." Bill Hall, BTM Dec. '98