I've been using calculated carrier rates for months and have never had an issue until today. Had an order come in for priority mail. I sell vinyl records so they are all set for a standard weight and when multiple are bought the rate is usually calculated fine based on weight. This time it didn't seem to calculate at all and it gave a rate of $11.95 (which is usually my calculated rate for 1 vinyl record but this order was for 4 vinyl records). So I checked and tried checking out myself, no matter how many records i added to my cart usps priority mail was calculated at $11.95 and would never go up. All my inventory has weight added to them so thats not the issue. Anyone have an idea what might be going on?