Chris,
Thanks for the feedback... I'll try to explain.
The DOVO Blackstar tested had a subtle grind error which resulted in minor bevel width variances.
The grind error I speak of is on what is known as the 'ridge' or 'belly' as seen on this link:
http://www.en.nassrasur.com/razorcentral/grind.html
The ridge/belly is the metal stabilizer formed parallel to, and within a few millimeters of, the actual razor edge.
If I'm not being clear - let me know.
Thanks again... keep it coming.