I just bought a slip on from hmf and I bought the rejet kit with the intention to rejet the carb myself but after looking at the kit I dont think it comes with a needle jet and it has 3 bronze screws I dont know what they are. I see the main jet, the idol jet and the set screw I attached a picture of the jet kit. It is the one hmf said to buy....does anyone know what those screws are or how I need to rejet this?