Sure I will or ask mechanic again to adjust the mixture.
Until now I have rich the mixture to its maximum I mean where rpm starts to drop due to richness of fuel. And also the other side where I lean the mixture to its maximum.
In case of rich, ride becomes heavier after few kilometers due to carbon deposits.
In case of lean, suffocation increases, missing and low acceleration/power.
At optimum level, engine runs smooth and no suffocation during a decent steady ride. Problem starts as I already have mentioned above.
I have tried new carb, new air filter, new spark plug. Not sure where else I need to look. What I guess there is some air leakage or should I give a thought to current coil?