I'm going to look at a job on the way home from site tomorrow where the client wants to replace his large downlights/spotlights to more up to date fittings. Am I right in thinking that you can get an adapter of sorts to put into the existing hole and then in the adapter cut the required size hole for the new fitting. Other option will be to reboard the ceiling!!! I'm sure there are other ways but any help would be very much appreciated. cheers!!! ; \