I have to machine a .270" wide slot 1.25" deep into 6061 aluminum. Im using sprutcam 7 as my cam software. I using a 1/4" hss end mill. I want to rough the pocket using a .100 doc leaving .010" / side at the bottom of the pocket for cleanup and take any spring out of the tool. I cant get the software to leave the .010 of stock for a cleanup at the bottom of the slot. I am using the finishing 2d contouring option. Thanks for any help.