Jay, I think you are SOL. There is no way to conact Dave anymore. His cell number has recently been disconnected. I highly dought that he will resurface again weather it be due to his health, mental state, or issues that he has related to the sales of his knives. It is approaching three months since he cashed your money order. Unfortunatly, I think that you are going to have to write this one off as a good deal gone bad. I dont belive that he could not physically get to the post office for many reasons (No.1 being that he made it to the bank to cash your money order). I think that he has mental issues that will not allow him to part with the knives. I tried to see if he was selling the same knives on other forums but it looks like he had already been previously banned. Go figure.