If you are planning to position either the Ambassador C14 or the Alpha HW615 band saws on the MB-600 Mobile Base, the stand pads would be optional and it may provide a more solid setting to remove or not install the stand pads, and place the saw directly on top of the MB-600 so that the base of the machine sits flat against the cut panel for the MB-600 Mobile Base.
If using a third-party mobile base option that goes around the edge of the base of the machine, and does not have a flat section in the center connecting the corners/casters, you may need to remove the stand pads for it to rest on the lip of the mobile base correctly.