thanx`s for all the advise guys. me and a shooting buddy spent some time at the range looking at grip and form and so forth when he commented on the fact that my left arm was drawn very far back. we both thought ok DL to long till i had a good look at my release (scott lobster claw). the metal bar securing the webbing to the wrist stap had in fact slipped (stripped thread) so i was drawing my left arm back way to far and it seems i was "opening up" to compensate for that hence the string slap. what surprized me was the fact that i never noticed it. i know it does not affect the draw lenth of the bow at but it just goes to show. small thing`s can make a big difference.