"So that's .03125 or a .032 of an Inch over 32 Inches. I am surprised you can measure that with a steel ruler."
I am not surprised, and in fact you should be able to get much closer than that, especially if using a USB microscope
"David, it would be interesting for Gary and others on here to share the results of the tests your doing and done on their machines"
Interesting, maybe, but serves no viable purpose to assist David in getting his machine dialed in. One should assume that CNC mfgr's and those that build numerous machines every year have methods and especially equipment to calibrate their machines easier, faster and to a higher level of tolerance than those that build one or two in a lifetime.