X Carve not cutting to proper material dimentions

Hello All, While trying to mess around with my New X Carve I noticed an issue with one of my projects. I created a Groove along the outside of my project.


Inside Easel the groove is perfectly positioned around the inside border of my material, however when cut the groove is way too high.

Any Ideas on why That Happened? I checked the measurements and they are pretty spot on.

Hello,
Thanks for this info it was helpful for me .
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Best Regards
scott778