Hi. I have an iPad 2/3/4 that is connected via airprint/Wi-Fi Direct to a Brother J4510DW, I'm using their own app iPrint & iScan because I need to print on A3 paper. Here is my problem, when it prints PDF or JPEG files it scales them wrong by 1 mm. This is pretty serious because we are printing building plans. So a scale that is supposed to be 5 cm becomes 4,9 cm in PDF mode when printing on A3 paper and if I convert the file to JPEG it becomes 5,1 cm. Does anybody know where the problem is? Brother aren't so helpful to be honest and I'm willing to try a third party app as long as it actually works. I bought Print Central Pro and it won't even print eventhough it's finding my printer.