im trying to make a contour cut on a piece of stone using master cam 9.1.. it makes the cut but it makes the cut then raises up at the end then goes back the the bigginning.. im trying to figure out how to make the bit stay down so it will start at one end and go down 1/8 then at the end make the tool stay down and cut down another 1/8 so it will finish my piece quicker..///