So I have planned EVERYTHING to a tee... I made a couple invitations early, brought them to the post office, had them weighed, and bought the stamps, well last night I finished all my invitaions put all the stamps on them, and 1/2 are .61 cents and half are .44 cents. they are all the same invitation, and they have have the rings .44 stamp on them. I dont know what to do now. I cant figure out why some are heavier then the others - any suggestions!?!?!