Very Cool Greg. Nice Video. The graphic issue is more than likely a conflict between the TMD and TMG files. Did you rename anything Jetcat in the TMD file? Becaue if you did the name jetcat is defined as a sub object of the fuselage so the location has not been defined. Another thing I thought of is if you tried to make the Jetcatobject graphically move in combination with the power source named Turbine you would have to redefine the object Jetcat as a main object in the TMG and create new lines in the TMD file for the Jetcat. I a only guessing on how you did what you did

Great Job

Pat