I understand that this is a Ultimaker site, but since the Tornado is almost an exact clone of the CR-10 I asked my question on this site. As supplied, the printer runs Cura v3.8.0 with Marlin v1.1 and Repetier Host v2.2.2. My explorations have led me to believe that the only change I would need to make is to change the Extruded setting in the Marlin firmware from 1 to 2, and it should accomplish my objective. I purchased a controller card and display so that I can experiment with firmware without messing up my printer and so far it seems to work, so I guess I answered my own question.