In the cat cut excel spreadsheet that BlackBishop offers on his BlackCat tarp site (thanks to Ivelph) when I put in my measurements I get all my numbers as expected, but what I don't understand is that the spread she starts at 3/8" and then ends at 1/4" Wouldn't this make the cat cut kind of "off kilter"
Please explain why it is like this and how you make a perfect cat cut with these measurements.