I suggest you go with @neilferreri 's post for VCarve, Vectric support is apparently providing it to Shapeoko users anyway, and many many folks here use it.
You can go and read that entire thread too for the “verbose” part, but it all boils down to using that post and generating Gcode in mm rather than inches, for better precision and for dodging precision/rounding-related issues in arcs.