Bulldog, dont go there with your old mate on Jacks carby icing theory
Remember my 2nd lesson with Jack, in his always low time c150's during the PFI him saying " you will have to learn this".....and then showed me how to disconect the airswitch
I had no idea why but soon learned it was the wrong thing to do when I went to Grovedale one day and hired their c150 and started disconecting the airswitch.......the instructor come out and said what the bloody hell are you doing!!!!!!