After your PM about this second attempt I am going to mark the trade between you and Gordy as done.
You are not obligated to send a THIRD package just to have the USPS say it was delivered and have Gordy tell you it was not delivered. You are also not obligated to refund his money.
Gordy, I don't have a choice but to bar you from further newbie trades. Never in my nearly five years on these boards have I seen, or heard of, two consecutive packages to the same address being confirmed as delivered by the delivery confirmation when they really weren't delivered. Not pointing any fingers here, just pointing out that fact.