Hi Ferrari Folk. I have been like a pig in sh*t these past few months rebuilding a 348. I am now up and running and went for my first very enjoyable ride today. One problem I am having is trying to reduce the idle speed. The butterflies are both up agains the stops. The linkages are nicely synchronised, and the air bypass screws are turned down as far as they will go but I still have 1100 revs at idle speed. Can anyone give me a hint on how to reduce the idle speed. Many thanks Harry