Yes you re right. I guess all Yamaha quality control shops are dealing in all type of bikes because only Yamaha do not give them the business they require.
Anyway, I just returned from one Yamaha quality control centre and mixture is set to its default company setting which is like 2.25 or 2.15. I don't know that much but as per mechanic saying that it will not cross 80 or 90 after doing this. I said you just do that settings and after that I test it on canal road. Again 100 or 105 was the last point but we can't accelerate more because of traffic: tank is full again with 60-40 ratio of hi octaine. I am hopeful to get a better mileage this time.