I just recieved a pair of Nike Breath Free II from e_bay(acution site) and it came with a 6 month warranty card. On the card it says it says if the outsole of these shoes wear out before 6 months, i have to send a reciept of the shoes with the card and ect . But the shoes didnt come with a receipt. Will i still be elegible for the 6 month warranty without the receipt?