I disassembled the carbs on my 72 cb350f and can't find for the life of me where the bottom of the throttle return spring attaches to. I know that the top is attached near where the cables meet the carbs but can't find a place to attach the bottom of the spring. Help! Does anyone have a picture of where the spring connects. I looked in the manual and couldn't get any help. Any responses are appreciated. Thanks, Sean