Well I installed the module today and after just three winds on the starter it sprang to life. Problem now is it is running too well. It is over-revving on Fast, but as you drop the lever it refuses to idle and cuts out. if I squeeze the rubber intake hose it then runs normally. I did notice the plastic governor vane is sitting up high and is is so loose that it will fall off with a slight bump. I am sure this is not right. It looks like it has to be pushed tightly to fit over the top of the metal, but it doesn't seem to want to push down and I don't want to risk breaking it or damaging the pinion gears. Is there a correct way to install the vane?
I reset the gears on the governor to factory settings, as there are two lines that you can match up for this purpose. I will try turning back the gearing counterclockwise to see if that lowers the revs.
The G3 carby is very "fiddly" but I am sure works very well once it is set up correctly.