Z axis Cutting too deep Xcarve ACME

I’m new to cnc world, Using easel my x and y axis work perfect I’m not using a z probe but bringing my bit manually to my work, my machine is cutting almost a 1/4in too deep where can I go to adjust this thank you for any help, I’m using the ACME threaded rod my machine was purchased 6 months ago new from inventables

Do Easel think you have a probe, therefore offsetting 1/4"?