AOA every1....i hav khyber 98 .for the last 2 months i m runing it on petrol.its giing black smoke wen acclerator is pressed hard aur cylencer pipe mein b buhat carbon hoti hai...had cab serviced fm suzuki raiwind but koi fiada nhi howa. after gettin it chked no of times frm there ,,masla needle valve ka nikla jis ke waja say petrol over karti thi.....mein nay needle valve b change kiyalakin masla hal nhi howa.he say ke needle local hai but i dnt thnk so...i bought it frm mumtaz motors.....yeh sub masla float level proper na honay ke waja say ho raha hai ...so tell me kiya kiya jai.....shuld i change the carb widd the kabli 1 or tell me gud workshop jahan say masla hal ho jai..thanx....