thats great news Pete. not sure about your throttle issue?
there is however an issue with the g3 carb ive had happen a few times . its the pinion gear thats connected to the governor vane. slipping a cog or 2.there is a cover plate covering the gears. the vane should fully open and close the butterfly valve if correctly attached.you might want to look at this. dont start pulling anything apart before you test it though cos they are a bugger to get right again.if it looks like it may be at fault let me know and i will find the proper procedure for assembly in my manual and post it for you. i havent done it often enough to remember it off heart.
cheers bazz