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I currently have a 6" vodka column. As an economic progression, I have often pondered the dynamics of having an 8" base for a few/several bubble cap sections then tapered and reduced to 6" diameter with bubble cap sections for the remainder with a 6" dephlegmator. This would allow me to occasionally add 8" sections as economics allow. Any thoughts about how you think the reduction in diameter would work relative to a 6" column start to finish?