Drained the carbs using the drain at the bottom of the carbs with the fuel turned off. Each carb contained about the same amount of fuel. Let the drains sit open with the fuel on and obtained continuous steady flow. Closed the fuel and checked the content of each carb bowl. About the same as the first time with an even level. Seems like my flow to the carbs is fine. I started the bike with the choke on. Ran for about 50 seconds. Restart gave only 5 seconds. Re-restart gave a backfire and about 5 seconds. Same again after that. Could it be the needles sticking?
