I feel overly noob for even asking. But as I understood it, A4 paper size was larger than the typical 8.5 x 11 in sheets we use in the US. I always switch the paper size in Pepakura to "Letter" and rearrange the pieces to fit. So my question, if im using 8.5 x 11 in cardstock, can I just keep the pep's A4 layout?