OK Ive soaked my carbs that is to say cleaned them
1.Check the floats. (These cannot be put in carb cleaner, or sprayed with carb cleaner, if they are of the Plastic material. {Brownish, or Black in color. It will eat them up!)
2.Check float heights. Make sure they are set to the specified level, off of the carb main body.
3. Make sure that none of the floats are bad.
(Make sure they float, and haven't soaked up gas. I don't know what material they used for your particular bike. Some are made of Brass, some are made of a Phenolic(?) plastic material.
If the Phenolic, {Brownish or Black in color}, material gets ANY kind of a slight scratch, a thumbnail mark, or any other teeny, tiny, defect, it will soak up gas. If the Brass float develops a teeny pinhole, or a solder seam lets loose, it will soak up gas)
Float level set too high, the carb floods out. Float is bad, it won't 'Float', and it will let too much gas in. Both conditions cause flooding of the carburetor.
When installing jets Do Not overtighten! You can actually twist them!
All the carbs must be set to each other. This takes a special setup. A Manometer is used to set multiple carbs. Motorcycle shops have Manometers.
It also sounds like you may have a vacuum leak. Check the rubber manifold sleeves, (Carb to manifold) See if any of the clamps are loose. See if the rubber sleeve was installed right back, to the position it came off of. The rubber sleeve will form around any casting imperfections, of the carb, and/or of the intake manifold. Has to fit tight like a glove on a hand.
Example:
Say there is a casting imperfection on the intake manifold. The round tube area the rubber sleeve goes on. Say that this imperfection is a slight, little bump. After time, rubber hardens, and forms around that little bump. Now you turn the rubber sleeve a little to the right, or left, when re-installing, and the deformed shape in the rubber sleeve from that bump, is now on a perfectly round shape. It doesn't fit tight around that round shape. Air will be sucked in.
That's a vacuum leak, and the engine will idel faster than it should.
You could have just one carb with this problem, and it will throw off the other carbs.
I carefully spray a little carb cleaner towards where the rubber sleeve connects to the carb, and also where the sleeve connects to the intake manifold. (Caution as it IS flammable!) Just a little squirt here, and a little squirt there, going around the sleeve, in the two areas mentioned above.
If the engine races up, you have a vacuum leak. With a vacuum leak you will never get the idle set right.
Your carbs also have Slides. The slide moves the main needle jet up, and down. These Cannot stick in the carb main body. They have to be nice, and free. There is a rubber diapragm that moves the slide up, and down as I recall. It cannot have a tiny pinhole in it, nor be stretched out.
Questions?