sshark,
Not really true about rubber deteriorate if unused. Look at at my vintage G-Shocks. Most are unused and still original rubber bezel and strap. Can you imagine, Cartier actually says that the life span of their rubber parts is 18 months.
Basically solvents, oils, perspiration, tanning lotion and salt can cause rubber to deteriorate if not removed.
silvertan,
I did ask if TAG can change (and I pay) for the new case with the metal parts. The answer, NO. Sigh....