It wouldn't hurt to re-sync the carbs. If it's just a small difference, and the engine is running fine, I really wouldn't worry about it. The gap maybe a little off on one or both of the plugs. I would imagine that even the index of the plug (read: the way the electrode points) would make a small difference in plug color.
If the bike has over 1000 miles or so on it, and the carbs have never been re-synced, I would say that a re-sync is going to do it. The initial service on the bike calls for the carbs to be re-synced.
The carb work during the first service, from what I gather, is really the only critical thing besides the oil change. Every bike tech I talk to says that the valves are almost always in spec, but the carbs almost never are.
If the bike has over 1000 miles or so on it, and the carbs have never been re-synced, I would say that a re-sync is going to do it. The initial service on the bike calls for the carbs to be re-synced.
The carb work during the first service, from what I gather, is really the only critical thing besides the oil change. Every bike tech I talk to says that the valves are almost always in spec, but the carbs almost never are.
