MakerBot Digitizer Calibration Tool

Firstly a major thanks to these folks....

jarretthollis for the checker grid matrix, and gtharris61 for the PDF scans, and being really nice about me asking 9million questions about his OEM calibration tool. I've pestered these guys for information over the last week or so, but after 5 versions of this tool, I now have a calibration tool that is 100% perfect, and allows my makerbot to produce some seriously accurate results.

Pay attention to the pictures, as the red circles point out where you should line the grid matrix sheets up to. They MUST be precise. The slightest deviation from those lines will render (pardon the pun) your makerbot useless. Also pay attention to the orientation of the grid matrix sheets, as this is critical too.
I have attached the stl files to print. Settings are below.