In the past, I have printed out a couple of wraps with the same exact black. When I used Avery EZ RS I never had a problem with the black until I switched over to 3M Controltac. When it comes time to installation, I don't know whether its the 3M being stretched too much or if it can be a problem with my printer but my black's are looking like dark heavy greens when stretched. Is this a vinyl problem? An ink problem? I can't seem to figure it out!