I haven't been around much lately as my health is declining fast. Today was one of my good days so I got the bike out to rebuild the carbs again. Ethanol fuel really plays havoc with mine. My stupid question involves the rubber plugs that go in the jet block. The plugs have a flat edge on them. Is there a certain way that they should be oriented when installed? It seems that the small plug should have the flat edge toward the side of the block to keep it from being squeezed but the large one is a puzzler. Any and all help is appreciated. Apologies to all if this has been answered before.