[John Mount]

I am trying to import gcode scripts into robodk but I am having some inconsistent results when interpreting the G03 command. The G03 is commanding a helical downward plunge. On one gcode file the helix is correctly interpreted, however on the other script the arc conversions seems to fail, and the path is a linear zig-zag across the plunge hole. I have set in the options-CAM tab to "split arcs" as seen in the screenshot. The gcode syntax seems identical to me between the failed and successful gcodes. Is there some other setting I am missing? I have attached the .nc files and screen shots from robodk.

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I should add that I updated to the lasted robodk v5.6.2