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If I were to install 5.4mm unregressed bees into a Deep with foundationless frames in the Spring the bees will build 5.1mm comb. I'd like to complete the regression by bottom supering with another foundationless Deep. My question is what is the cutoff date during the season when bottom supering would result in undesirable cell size construction\broodnest structure? I could of sworn I'd read somewhere that bees only focus on broodnest structure\ building small comb in the spring.