yoohoo manometer carb sync

http://www.xs400.com/media/my-home-made-manometer-balancing-the-carbs.120/ I would prefer this type over what you have. Maybe not so big as what he has.

@xschris I tried that type, and probably didn't have enough hose since the engine sucked up the fluid and spit it out the instant it was hooked up, that is why I went with the bottle type, it gave me more time to adjust the carbs. I also discovered plastic bottles don't work for that same reason, they collapse and the volume reduction causes the fluid to quickly move toward the engine.