Hi dave thanks alot for your quick reply . Very much appreciated . Is it possible to post a picture of your turbine install and the thrust tube carbon cone install ? I am little bit confused on the point of these two items. I see the point you are trying to make but really the thrust tube is literally pressing agains the wooden former in the tail of the kit and there is no way it could be centered on a turbine installed on top of the rails . It would be very interesting for me to see how you have done it.