Hi. Where can I buy masking paper with a taped edge? What is it called? Alternatively, I might make it up using wide masking tape and newspaper. I need to back tape a panel with primer on it. I have an area that was uneven that I need to re prime. I’m not even going to sand back the guide coat on the rest of the panel yet because I know it’s flat and I’ll just end up cutting through the primer again if I sand it more than once. Thanks.