I'm working on a 3dLabPrint plane, specifically the P-51. I've modified the long nose into 2 pieces so that I can install the larger motor for combat but still have the scale looks of the smaller motor. The larger motor does not fit through the front hole so I used Mesh Mixer to slice off the tip of the nose into a 2nd part. In both the original part and the sliced part there is an area that prints over open air, which as you can imagine comes out pretty bad. Splitting off the tip of the nose I now have the open section right below the spinner where it will fill in but I need that area supported. I can get it to allow me to insert manual supports but when I go to generate the gcode the supports are not there. I hope the attached pics will describe what I need help with.