Ok grumpy thanks for that. I will try this and let you know. I have taken some more pics so you know where my throttle cable is and the relevant position at the carby.

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Fast speed with the position at throttle.

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Stop at throttle.

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I just thought this is interesting there is holes for adjustments. What do they do?

Another thing is, is when you cycle the throttle cable it appears as if it doesnt do anything to slowly adjust the speed until the level for the choke action moves? Is this right? I also noticed that there is a hole that goes into the crankcase and i imagine this is where the governor is supposed to be, which adjusts the speed to advance the mix as you go(on other vids i've seen) is this right?