I've had a problem with the lense on my housing getting what appears to be condensation between itself - that is it's a double layer lense and moisture or something has happened between the layers. I'm looking into ways to fix it - but am getting a new housing because I need it next weekend.
If I do get it sorted out - or you think you can - and want it - PM me.
If I do get it sorted out - or you think you can - and want it - PM me.