Modifying stock air filters

Hi guys,
I just wanted to let you know that I solved my problem. I took my carbs off, disassembled them to pieces and gave them a nice long bath in 5 liters of vinegar. Afterwards I cleaned everything with carb cleaner, reassembled them, set up and voilà! My bike has never ran better.
Thank you all for your help. Cheers!
 
can't post a photo of plugs right now, but by 'fine' I meant dark brown color. I'll post a photo asap.
Also I could've made a mistake, the original main jet was probably 134 or 132, not 128.
I think changing main jets to bigger reduced the choking a little but the difference is so small I may be getting a wrong impression.
By floating level 1mm below floating chamber I meant level of gas in a tube connected to the drain. It's just like some fellows photo in another topic:
full

I have plastic floats set to around 22mm.
Another thing that just came to my mind is that I had to unscrew my mixture screws to 3 full rotations to get my bike to at least run. the manual says 1,25 rotation. But I guess it's crazy, it shouldn't be like that.

XSChris illustrates why measuring like you're measuring is more realiable. When you measure the actual float height, bowl off, carb upside down, depending on your model, the numbers can be different and confusing. No matter what the carb, if you measure the fuel level with the carb installed, you'll ALWAYS use the same number. It should be 2mm below the seam of where the bowl meets the carb body. No confusion!
 
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