Just going over all the fuel and vacuum lines on my bike last night, and noticed the RH side carbie breather was blocked off with a screw in the end of it.

What effect could this have ? And where is it suppost to go ? The LH side breather was just looped around and run down with the bowl overflow lines. Is this the correct position. I couldn't find any decent pics of info on this site reguarding these breather lines.
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