Solved.
It was the float. Can go up to 45 Kmph again.
Only issue I am figuring out right now is getting gas to flow through inline filter to the carb, I avoid emptying the gas tank, but I forgot to refill the tank for a while and got home with the last few drops of gas. Once the fuel is filled in the fuel filter it stays there, it's just that it takes forever.
Last time I was squeezing the rubber fuel line to pump in fuel, but now I got proper fuel lines installed that doesn't have any give to squeeze.
I'll try removing the drain screw and letting gas out till the filter is half full.