hey guys i have had this thing for awhile ive done a full uper end rebuilt it new clutch new plastics with monsters decals new tires and black powder coated rims but the one thing that occured to me is that i should rebuild my carburator and the reason i should is because my engine back fired throuh it and the reason i say all of this is does anyone know what kind of carburator this bike has it doesnt say i typed the code on the side in and it said nothing on recored and i even went to the shop the ultimate sin but i did and they didnt even know who made the thing does any one know i think its stalk but ???????????