This Neff Cooker Hood Halogen lamp looks very similar to the 2 fitted to my Neff Cooker Hood. However, the lamps I have are not working because the ceramic bulb holders within the fitting appear to be worn and they will not hold the bulb in place to make an electrical contact. It is very fiddly to replace the bulbs and when they will not work unless I hold them in place with a piece of kitchen towel very frustrating. I wondered if I could replace them with a more conventional down lighter - but something that would withstand the steam? Your advice would be much appreciated. Thanks.