On my 69 SS ElCamino, I have the satin black all done on the tailgate, and now I'm ready to mask off the area to the inside of the tail lights, so I can paint that area black too. Can someone tell me how far the black should go inside the tailgate jamb area? I'm thinking around a quarter inch or so? Also, should the line be taped off, or did they just let the over spray fly?