i have the same problem. my 3 wood is steel and i can hit it and the irons straight as hard as i like. but the driver is a reg flex, and i slice it to no end when i want to hit it hard. i have to force myself to slow down to use it. its really frustrating, especially after i spent all the money. i had requested a stiff flex when i bought it, but the salesmen slipped my a reg flex. i guess he thought he was doing me a favor. now i wont go back there. dont trust them.