Parts set = parts bank of carbs. 90% of the bits are common between all the vm carb sizes. It's always handy to have a cheap junk bank of carbs to "borrow" the odd bit from. Those choke pick up tubes are common to all sizes but are not included as a replacement part in any kit. Heat the ca...

You can solder it and re drill. If the choke plungers seals are good then they are only operational when the choke is on. Alternatively if you have a parts set, with a bit of heat they just pull out and replacements push in.

Good spot. Another issue. All four should be as top one. They are the choke fuel pick ups.

As Nigel said poor running is gererally down to several issues accumulated over the years. Those jets are suspect and I would replace them. As they not genuine I would suspect both the needles, needle valves and airscrews are not either. Your right itheres no guarantee a replacement set would be a y...

Mikuni jet logo. Appears on both genuine main and pilot jets.

115 in the center two and 117.5 (118 no such thing) in the outside is wrong. The middle two are the ones that run hotter so if anything you want bigger jets in them to be run richer. Do the main and pilot jets have the Mikuni logo on them? For sure someone's been in there and messed with them. 2022_...

When checking the jet sizes look to see how the size is stamped, if they look like second rate stamping, at an angle or generally just naff chances are they are after market dross. Genuine mikuni jets have size and their logo stamped appropriately neatly. If they are after market bin em for sure. If...

The ones on the carb sides are airscrews,. So screwing them in richen the mixture and turning them out weakens the mixture.
If you still show rich at 3 turns out your pilot jets are too big. The jet size should be stamped on them. Both pilot and main.
Check sizes and report back.

Fingers crossed for you Graham, sure someone will step up, but if they don't the offer is open

If you were closer mate or you don't have any volunteers close to you and you would find a courier to get it to Kent I'd happily help you out foc.
As its running it can only be settings assuming all the carb parts are original and in good nick.

Graham, you have one workshop manual and some toilet paper. Flush the Enid Haynes Blyton copy. Vm 26 carbs are the same as vm24 's bar the throat size in this area. Download a Z650 kawasaki manual for a better idea. You don't need to double washer the valve seat. I assume you have genuine valve need...

I suspect that where you straightened the float it is no longer sticking ng/catching on the bowl/gasket. However where you have double washer Ed the needle valve seat you have effectivelly dropped the seat inlet hole lower so the floats now can't drop low enough to oped the fuel inlet fully. Once a ...

Hope it was more Millyard than Cole hands on Nigel.

Using fuel instead of water will tell you more Graham. If there is a crack in the overflow it'll be full of fuel. Fuel and water don't mix so the fuel would effectively be a barrier to any leaking water. As the overflow tube sits higher than the bowl surface you could try putting your finger over th...

If the overflow tube is cracked split it can be replaced but it's easier to sleeve it on the outside with some bass tube then solder it in place. If you've got an radio control model shop near you they are a treasure trove for little odds and sods like brass tube, piano wire to make springs, small t...