I've been using my 910 D3 since they came out, one of my favourite clubs over the years, the last month or so it seems very flat and losing 30/40 yards to my normal distance, there are no rattles or signs of cracks but it does sound different when hitting a ball, I first thought it was me and my swing or the wet conditions etc, the pro at my club tried it on the simulator this morning and thought it didn't feel quite right, so is there a shelf life for drivers and do they naturally deteriorate over time, (I know it's getting on for 8/9 years old) or am I just looking for an excuse to go for the new TS2/3 in which case I'll have to look for a fitting, any advise gratefully received