I think Peter it should still work fine. I've profiled with expired ink heads and ink. The issue I did find was it wouldn't profile matt papers/canvas due to some technical issue. The printer would make a test pattern, scan it but then fail with an error message - I hope yours is still working fine in this regard. I never resolved the issue, but am now upgrading to a Z3200 (My 5+ year old 3100 just died yesterday).
Died? What happened? Selling it off for spare parts?