powersedge.com has pictures of the oem parts for the carbs i think thoes plastic things are splash sheilds i have mest with four sets of stock carbs if you put the slides in backwerds it will run like crap . you can go 2 1/2 turn out on the air screws to lean out the idle mixture a hair 3 turn out is the max or raise the needle clip one to lean the mixture witch effects the 1/8 to 3/4 throttle mixture.the choke crosover tube must be on between the carberators .how is the compression