A Feather in an Oval V-Groove is a Fringe of material left behind where the cut started and ended on either the inside/outside cut of the Oval V-Groove.
If the Outside cut of the Oval V-Groove has a Feather, Increase the Outside Oval Rotation.
If the Inside cut of the Oval V-Groove has a Feather, Decrease the Inside Oval Rotation.
How to Adjust the Inside or Outside Oval Rotation
When adjusting Configurations, click the Plus(Increase) or Minus (Decrease) button on the desired field about five times.
Click OK and do another test cut.
Continue making adjustments until the desired outcome is achieved.