Recently bought this bike. sat for several years so I had to remove the carbs for cleaning and am in the process of remounting the air box, but I just noticed the outlet tubes have a part # and above it a very small designation of 1 and 2. I had to remove the tubes to repair the air box and I didn't see this 1&2 designation. Are they matched to each carb? If so which number is L and which is R? or does it not matter?