I agree that 78 is way too high, i'm just saying that it probably won't kill your cigar. My cigars rarely get into the 70's much less high-70's. I try'n keep my cigars at about 67% Taht's where I like the way they burn and taste, granted I probably don't go lower, b/c then my Medium-full/Full cigars would be a tad too harsh. All I was saying is that its mainly a taste preference, so long as you don't go too far, and let mold grow, or let your cigars dry out into dust.