30mm TMX jetting start point


Ive just picked up a 30mm TMX carb and want to put it on one of my scoots, I was hoping someone could give me a jetting startpoint? Ive noticed this tmx has an interchangable atomiser which could make things a bit more difficult than jetting say a 35mm tmx with no interchangable atomiser (just different needles). I have two scoots i migth try the carb on, the first is a barrel reed induction malossi 136 (direct induction? - full circle, pm chamber etc) and the second is a stage four 200 lambretta engine (pretty much standard indian engine - sorry if this is the wrong board for this setup). Can anyone help?