I have Piaggio fly 50 4t 4v 2011 and recently, my carb heater broke and my scooter wouldn't start. At first, I did not know it was that and I tried to adjust the idle speed and idle mixture screw. It's only after those adjustment that I figured out that my carburetor heater was broken and ordered a new one. Unfortunately, I don't remember the number of turns to do on either of these screws. I only know that the engine should run at 1950 rpm at idle. Does someone know how many turns I need?