Case in point about getting all the parts from the switch, each presta tube can make 2 or 3 switches, but each switch needs two nuts, from which I had run out. After visiting two bike shops, one which I took a bike for a spring servicing to sweeten the deal, I came home with 2 tubes and 3 nuts. Damn. I hope when I pick up the bike, the guy manages to find some more nuts!