Learned that #2 cylinder wasn't firing on Cory's CB550. Upon investigation, discovered that the float was hanging up on it's hinge pin, which I bent while trying to remove it when I was working on the carbs over the winter. After some careful filing, followed by fine sandpaper, it moved freely. My son (Cameron, my oldest, home for Easter) put everything back together, and she runs like Ricky Bobby leaving the grocery store! I had no idea it would have so much power once it was actually running on four cylinders! A great day!