Hi - hope someone can help. In my bathroom I have big brass spotlights which I suspect are not specially for bathrooms because they have corroded. They are inset into the ceiling and the cut-out is 130mm. I can't seem to find bathroom lights with this diameter. Is there any way of filling in the holes to take lights with smaller cut-outs? At the moment I am thinking of lights which will sit over the holes rather than in them or of replacing or putting in a false ceiling - all of which make my partner blanch and tremble!