When I slice a model with a flat bottom, sometimes it places it just above the bed and the bottom of the print shows red and asks for supports. Can there be an option to lay the print flat on the bed?or atleast lower it. also an option to multiply the parts. I dont just want to print one I want the option to fill the bed with as many parts as I can. As you can see in the second pic, one needed to have supports printed on the bottom and the other didnt