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thanks for your input, I'll give the breake cleaner and compressor a try!

So.. as I was spraying with brake cleaner, I decided to strip them of all the rubbers, they didn't give me any problems so far.
I have new float bowl gaskets, the rest goes back as is, all the membranes look very good.

got a can of putoline carb cleaner, works really well, the dirt just runs of.

I will take it to work and soke it in the techniclean degreaser bath, and work on it with some more carb cleaner and compressed air, and I think they will be super clean..

Maybe also get them ultrasonic cleaned, local motorshop charges $50, but I don't think they really need it, or better to have it done anyway?

Remove all rubber parts before using the degreaser fluid. they tend to dissolve and expand.

yep, I got all the rubbers and membranes out! I know, even the protective rubber gloves desolve

There are also oil seals on the throttle shafts that can get damaged, depending on what you clean the carb bodies with.

A non caustic method such as ultrasonic cleaning is one of the best ways to safeguard those seals.

These seals are pretty hard to find new.

Todd.

I think I got everything out.. which seals do you mean exactly todd, maybe I missed them.
Do you mean the shaft where the butterfly valves are mounted to?

I will bring 'm to the bike shop to get them ultrasonic cleaned to be sure and not put them in the degreaser bath, it's not to expensive.

thanks.