What is that P, Chad? Diameter as defined in Fusion, radius, something else?
Likely we'd need to edit the Fusion post to output the D instead.
In modern times I've gotten away from using cutter comp!! Mach3 didn't do it the Fanuc way, as I remember, and while Mach4 does, I've taken to using stock in the CAM software, measuring, change the stock, repost!! It's either change the cutter comp and rerun, or change the stock in CAM and rerun, not much difference. Back in the punched paper tape days it wasn't so easy to repost as it is now days, so changing cutter comp was easiest. Back in those days I insisted on reading the Gcode and if it was cutting across at Y 1.000 on the print, I wanted to see Y1.000 in the Gcode, dammit, not Y1.246 or something!!! That habit died hard but it's dead now!!
Tom