OK, I have read about you guys running doubles and meg mo's. First question, when you are running doubles, you just stack the blades right? Doesn't that require you to raise the deck since the bottom blade is now lower than it would normally be or is it not enough difference to matter? I have an Exmark Lazer 60 with the 23 Kohler. Is this enough HP to turn doubles and what blades should I use? Stock Exmarks? I also have a 48" Gravely WB with a 15 HP Kawasaki. Will it turn them also? Thanks.