Wait, you're only leaving ten thou? That seems like way too little to me, I usually rough leaving .030 to .050 depending on the material and how rigid the setup is. Ten thou barely gives the insert anything to bite, especially on a Haas where you might get a little tool push. Maybe it worked for your foreman because his finisher was taking a deeper cut anyway?

Wait, what did he say? I need details!

So you grabbed the coax and did 14 parts without scrapping a single one, and that made you wonder why you waited three years. Fair question, but here is mine. Did you actually check the back jaw for runout before you trusted it, or did you just assume a Kurt vise is always square and call it good? Because I have seen jaws get dinged up from chips getting smashed in there, and a coax will happily sweep a bent jaw in 20 seconds and make it look perfect. The needle being steady does not mean the jaw is straight, it just means you are spinning around whatever surface is there. So next time you set up, try sweeping the jaw itself along its length, not just picking up the face, and see if it is really dead nuts or just dead nuts at one point.