CF used to be my main in Melee, and I used his Dair a lot. Now in Brawl though, half the time his Dair doesn't work when I short hop, and sometimes even during a normal jump. What I mean is that when I use it, CF pulls his feet up, but they never come down into the attack. Why? It happens 99% of the time when I use it with down + A, and half the time with the C-stick.