Two weeks ago I made some changes in Carburettor configuration. I was feeling that my idle RPM is high. But after changing configuration I found that drastically power loss. Even on 80 speed my Bullet 500 is behaving madly. Bull was uncomfortable and demanding for more throttle Twist. But last Saturday when I was on the way to Hometown I release that I was unable to overtake comfortably. After lot of mess I remembered that I made some changes in Carburettor configuration. I just park my Bull roadside and set the idle RPM again and now I am feeling no power loss. Also getting Mileage of 31KMPL on average speed 80-85 KM/H.