Hello Chris, I own 3 vespa peds, a 78 ciao (almost running, needs a new carburettor) a 79 ciao (running like a champ) and a 78 bravo (not running, needs new points and condensor). I also own a 79 p200e scooter (not running, is in mid-restoration, hopefully will be on the road in the springtime).
What is wrong with your 74 ciao?