I've been using the Autoxleeve with the 9oz weight for an [words=http://www.phallosan.com/shop/catalog/default.php?z=eNortjIxtVKyL0pNszWxMFcrSSxKTy2JL0hMT7U1UisoykyxtbBQSy4tLsnPjS8uKcrMS7dVsgZcMMpbEbo%2C]ADS[/words] for a little bit. I primarily sit at work so I feel the 9 oz weight is not enough to give a good pull. I want to bump to the 14oz, but don't want to spend $30 for it. Any ideas?