The Circle/Oval Rotation Utility is a more detailed calibration feature than adjusting the Oval Rotation field alone because it allows for adjustments for different sizes of ovals.

If the Oval Opening has a Feather, Decrease the Oval Rotation by moving the slider to the left.

If the Oval Opening has a Bump, Increase the Oval Rotation by moving the slider to the right.

Select the Bevel Type Cutting Direction for the bevel type you are editing from the upper left dropdown control.

Put in an 11x12" mat into the CMC and click Cut.

Align the Head if necessary.

After it cuts, check the cuts and determine if you are getting a Bump or a Feather for any of the oval sizes that were cut.

Adjust the Rotation values accordingly until satisfied.

After a particular size has been satisfactorily adjusted, click the Locked checkbox for that size to no longer cut nor adjust it.

If desired, use the Positioning Control Arrows to move the design one-mat-width with each click. 

This allows the user to cut several of the test mats from a full sheet of matboard as you calibrate the circles.

It shows the full sheet of matboard with a representation of the last mat cut displayed.

When you have finished calibrating your circles, click OK to return to the Configurations Screen when done.