I need some clarification on some jbeaming. As of now I am implementing the B-25 to 0.8. Sadly it doesn't work as I have hoped. I have some major problems. The biggest is a bug with the vehicle controller, where the is an error in the frictionClutch . The controller is in the main j beam and the rest is in the to engine files. I have an error with clutchRatio (a nil value) in the powertrain lua. The shaft is connected to an rotator if I only use the dummy controller the it works. Not sure why . The next question would be the engine thermals as I have conflicts with the two engines even if I have two engine groups. If somebody as more information on how to fix it, I will send the files needed