My swing is usually nice and smooth until I start the transition from the backswing to the downswing. I make crisp contact with my driver and irons, but my ball always seems to slice off to the left mid flight (I'm a lefty). I've read that the 2 causes of a slice are an open club face and coming over the top, and I'm sure I narrowed it down to it's me coming over the top. The funny thing is that if you tell me too, I can hit a hook. If you tell me too, I can hit a slice. But I can't hit a straight shot if you tell me too. I guess that's just golf for yah. I've heard about the Inside Approach training aid, but I don't feel like dropping money on it. I'm just looking for a drill I can do to prevent coming over the top. I really feel like I'm getting close to fine tuning my game to become more consistent. I know what my problem is, it's just I don't know how to fix it. I try to pretend that I'm hitting the ball out to left field, but that doesn't work too well either. Thanks for the help.