Seriously nice bike bruce!! you are a real weight weenie 🙂 I am abit of a weight weenie myself and have learnt when you go down this track, it is expensive for light and strong components.
Learnt from experience, to have a light bike, it is important that you start with the frame, choose a frame that suits your riding style and purpose then the lightest possible with a life time warranty. Next move onto the wheelset, I normally have several wheelsets, one for training and racing, but again choose a wheelset that suits your riding purpose and then the lightest possible (and have then built by a good wheel builder). Then look at forks that suit the frame and wheelset, I would consider performance before weight here.
ROFL Harris : as say before, I would change out your tires as you can get better ones than you have currently. Look at your stem, bars and seatpost, but upgrading these will not be cheap, but have a look for "syntace" components as you can pick up some good deals on these (stem and bars) also "FSA" for stem.
At the moment I am weight weenieing myself and that hurts 😕