the majority of F8's I have received in the Boom swaps have come to me w/ .45 stamp and have never had to pay any postage. I think it has to do w/ the receiving PO, which just makes me mad. If the mailing PO said it was OK w/ a .45 stamp what right do they have to disagree with them and make you pay more. It should be up to the PO that is mailing it. Does that make sense to anyone else or is it just me and my twisted logic?