Thanks Jeff. I love the white paint pens for stuff like that. Sharpies for me have always been a way to compensate for the fact that I never press hard enough with ballpoints. So Using sharpies, and gel pens help me get that line quality. I think because I press so lightly I can get those graduations off the sharpie by moving quickly and barely kissing the page with the marker… this one was a gel type ballpoint though… just a lot to going over it to get the blacks so solid.