ok - so that bevel formula (and the subsequent calculator) requires something that I am missing or not understanding - 4.7* is flat incorrect for what I need (probably due to ignorance)

Anyway - I found this site below where it is actually looking at the metal I remove and taking into account the width left after grinding/filing - then dividing the depth of bevel cut by the height of bevel - will give you a number that you can run through the Arc Tangent - it gave me a degree of 2.9* to get what I wanted. Of course - you guys probably all knew that - I still don't know what I did wrong on the DC Knives calculator - It is definitely an

'ID Ten T' error for sure

Here is a link to deign tech with their method that I was able to comprehend (it had pictures!)

Design Tech Blade Angle
Here is a link to Rapid Tables Tangent and Arc Tangent Calculators (you will use it to plug in results from Design Tech)

Tan & Arc Tan
I put these here so I could find them again some day....