it is no big deal , take the 4 screws holding the fuel bowl on , ( that will be where your fuel lines are attached ya know ), remove the bowls, then remove the metering plate , there are dowel pins on the metering plate , you must remove it carefully and straight off, (the 4 screws hold both on with gaskets on both sides of the metering with a total of 3 gaskets ) your jets will be at the bottom of the metering plate, use a large screwdriver to remove and replace , do the same thing for the other side of the carb, that is about it ........