I understand completely Have you seen 1st prototype.I had to get some (Bugs) out.Like changing the Direction of Rotation to get equal an Most efficiante Airflow on Both sides.!st prototype had reversed direction and Reverse Prop; on one side to get the Same Airflow.Changing Direction Solved it.I now use Stock rotation and Props. on both sides.Smallest reverse prop I could find was 8 inches. actually to Big for My Prototype.