I'm printing a large, 66"x44" borderless print on my PRO-4000. I'm printing to a 44" roll of photo paper. I'm using Canon print studio pro. However, there is about a one inch area along the bottom of the print that I can only describe as a "glitch." There's a photo attached of a print I canceled once I realized it was doing this. The only way I can describe it is that it takes what is along the bottom edge of the photo and prints kind of a smear of that along the bottom edge of the print. Why is it doing this? It's about an inch wide, and only at the bottom of the print, not the top. There is nothing like this in the print itself when I look at it on my screen. Thanks.