Finally put the item together today only to find after the post had been cemented in that when we went to attach the mailbox the next day, we were only able to screw in two of the screws to the mounting plate (with great difficulty) because none of the holes lined up.  Also, the mailbox doesn't close securely at all and I fear that after being opened and closed every day, it will eventually not close at all.  Can I be sent a replacement mounting plate and a mailbox that closes securely?