I recently picked up a 73 CB 500 FOUR. I am new to old bikes and carbs. I currently own an 04 gsxr 600 which i turned into a naked bike. I also own a 2008 mazdaspeed 3 which i daily and love to modify. Already having problems with my bike even though it ran great when i picked it up a week ago, look out for my troubleshooting thread!!