i just picked up a shee that has keihn airstryker carbs. the guy said they were 35mm but im not sure on that yet. he also said the only way to run them was with the twist throttle thats on there. i hate twist throttles and would really like to put a thumb throttle on it, does anyone know if i can do it and where do i get the cable. BTW this is my first shee and i just joined the site, you guys seem really helpful and respctful.