I bought a D1 secondhand in March and am delighted. For a sports photographer, that +50% on focal lengths makes a huge difference! My [also secondhand] 80-400 VR now becomes a 600mm handholdable lens! Why am I keeping the F5? Sadly, in the members' grandstand at Le Mans this year, a piece of the body covering (the one under my thumb, i.e. covering the CF slot) fell off and was lost. Any ideas how I get a new one, please?