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This is the one I mean

It's hard to see but it's that angled one at the back of the actuator

Here's a couple more pics I got, sorry the lighting is crap.

This one I blocked you can see the start of the duct tape I made that one a decent sized one, has a bolt screwed into the end of it than duct tape wrapped around it

Is that the other end of this hose?

Yes

It's probs 10-15 cm in length and blocked at the end

I know this is not your current issue, don't want it to become an annoyance later though, A de-barked tree branch of the right diameter is a far better vacuum hose plug then a threaded bolt.

Typically bolts with a shank are to long to stuff into a hose all the way to the shank, unless it's to small, then it will still leak.

Can't count how many times I've seen/fixed a rough idle do to a bolt used as a vacuum hose plug.
Very common in the carb. base plate days ...

Ok well that’s good. Just do some testing tomorrow and see how you go.

Ah yep cheers mate it's only temporary just trying to get it started