do you have to fill out and send in the card that comes with you light to have a valid waranty on the a light or is it mainly for their "information" so to speak. the reason i ask is that if you were to purchase a light from someone who has already sent the card in will you be able to file a warant claim with surefire or will it be void since you are not the original owner? thanks in advance /ubbthreads/images/graemlins/smile.gif