V-20 Weight Increase?

[RWilson2526]

that's what I initially thought when I saw the 1989 spec sheet as it just said outboard . but the 90 and 91 spec sheets show 2300 lbs and say "o/b, no engine" but then the 92 just says outboard again. I wonder if they screwed up? cant figure how else they could add almost 400 lbs.