Don;t know about carb set up on ur bike but try resetting mixture screw back to original setting carb is seriously flooding fuel set up is usually from tank through filter to a float chamber which holds small amount of fuel to serve mixture setting usually a needle type fixing as u twist throttle this needle moves allowing additional fuel to engine however float level needs to be accurately controlled fuel bypassing control system with new carb suggests fuel line to carb missing a gauze filter washer ect...very intricate things carbs should never touch unless good manual or good knowledge.
kneadman
August 2011