Our web site uses "cookies" to manage the contents of your shopping cart. Sometimes when customers use special privacy software (like Cookie Patrol), cookies can not be used and therefore the contents of the shopping cart are lost when you try to add more items. We recommend disabling this software while placing your order, or simply contact us at 703-437-9319 and we can take your order over the phone. Another alternative is to place your order for one item and then contact us to add additional items to your order.