You can actually see a mark in the second photo where I tried to cut it early on with a pair of heavy duty tin snips, they wouldn't. I had to use the tiny metal saw blade on my Dremel tool and it still took forever and smoked up my shop. When I was done though, it was worth it. Even if you were to take a less drastic arc out of it from the back to the front, not as "deep" it could improve the looks.