My friend gave me the dellorto racing 19 phbg carb today, I looked at it and it has a 75 main jet and a 60 slow jet or I'm reading it upside down and it's a 09, I also have a cable and a choke assembly that you twist and pull. The cable only had one of those metal nubs on it the other end is just a 1/2 in of non bendable cable does that mean the cable is defective. Also how do I set up the manual choke, with the twist assembly?