You need to understand that it is not an easy cabinet to measure dimensions of. If you have a big rectangular box, ya anyone can easily determine the dimensions of it. But when you throw in large curves like Pac-Man and Ms. Pac-Man has, how do you measure it accurately? How do you hold a tape measure up to a curve and quantify how the curve is defined or how large the radius or arc-length (which is still useless w/o a center point) is?
If I remember correctly for this cabinet, I had a large reference picture that I imported into AutoCAD. For the curve, I used the picture to trace some curves that matched up to the curves on the image. I then approximated the curve radius's (radii?) down to the nearest useable unit (I think it was either 1/8 or 1/16"). I didn't make much sense to tell people to cut a curve that had a 36.29384832" radius. So an approximation has to come into play somewhere.
Now guys... just a reality check for you all. The cabinet you are making is NOT a real Ms-Pac Man. It's not an original. It never has been and it never will be. So it doesn't matter how exact you try to copy a cabinet. Even if you think you have accurately copied a cabinet down to the nearest 1/128 of an inch... it is still not an original. It's just a copy. No one is ever going to measure it. No one is ever going to line it up with another cabinet to check how exact you copied it. A lot of people on this forum are so super hardcore about being original and staying true to the original design, etc, that they loose scope of what they are working with. A copy. Hell, even the ORIGINAL Ms-Pac Mans differ slightly from one to the other (if you look close enough).
BTW, I'm not making excuses with what I'm saying here. I'm just saying that even what people consider to be 'perfect', 'pristine' copies, really do differ a little when you look close. I will get those plans more accurate on the front curve when I have some time. I never knew they were that far off (and honestly I'm surprised that with so many people using the plans over the past 4 years that no one has caught this before).