After dozens of unsuccessful tries I gave up last year on ever getting my Martha Stewart Punch around the corners to work right. Never came out even.
For some crazy reason I got a set out and played with it for a layout on an off-chance it might work. Otherwise I was going to get out my Lucky 8 punch.
The punch around the corner set worked perfectly. I even used it twice on the layout (the loopy punch) and am very happy with the results!