I need to find out what FBA sellers use to print their FNSKU barcode labels on a DYMO 4XL label writer or a Zebra ZT410 printer. I have used them both with thousand approved through Amazon but now ran into a shipment that had the barcodes unscannable. The paper I just bought for the Dymo still has a shine. The Zebra I need to see about changing it from a thermal transfer to a direct transfer and need to know what roll of labels people are using.