An interesting lesson from a friend of mine Sean, I am quite sure KOC will elaborate this wonderful Biomechanics catalog written by a Japanese Biomechanist.
It is pretty much a comprehensive system and it first start with a list of exercise to determine your biomechanical type. Once you had worked out the type that you belonged to, you can then look up your compatible Impact Fix, setup, release type and rotation balance.
So are we sure, we are using the correct impact fix?
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I am not East Coast nor West Coast... I stick to the MIDLAND