Hi everyone. I am interested in rebuilding my Nautilus, since I am not using it anymore with the stock coils and airflow. As a first step and to increase the airflow, I have drilled a second airhole thru the ring and have just about doubled the airflow which is nice and now I can lung hit it. It would be great to hear from anyone else who has tinkered with this device. I have seen the youtube videos about how to recoil it and I am thinking about building something with around a .8 Ohm resistance. Does anyone know what the max wattage I should consider is. I want to try to avoid melting the rubber grommet. Any info on this would be helpful. Thanks.