I have a 1981 kz 440 ltd with the baffles removed and pod filters. I bought a 6 sigma jet kit and it comes with needle spacers so i went to install them and the needle got tight and wouldent move so it says in the directions to file down the needle head i did that and the needle broke and now i have no idea how to fix it were to buy needles. Any advice would be great. O and they are 32mm keihin diaframed carbs.