Wilfried I think you made a wise decision weather getting better but still not good. I thank you for your input into the valve setting on my simplex and it is now running on air, not great but it is running! Guess my workmanship needs improving. I am going to alexander palace at the end of the month and maybe I can meet up with some of you very helpful people. I hope you all have a great new year Best wishes keith. MODEL ENGINEERING DISCUSSION LIST. To UNSUBSCRIBE from this list, send a blank email to, modeleng-request@xxxxxxxxxxxxx with the word "unsubscribe" in the subject line.