New IWC Ingenieur Owners - How is your lume?

[SpecialK888]

I've had my new white dial Ingenieur for a few months now and am really happy with it.

However, I'm starting to think there is an issue with the lume which seems to be non existent even when I've been in the sun all day. I've not tried it with a UV light, but regardless it is performing very poorly in natural sunlight.

Be keen to hear what other owners have experienced before deciding whether to raise with AD. Thanks