Help I've had a gainsboro' shower in 4 over 5 years and just this morning there was a smell of burning so off it went. When I got into it, it had started to melt inside. I know I need to replace it but I can't tell from the shower what size it is, it's either 8.5 or 9.5. I'm going to buy a new one probably a 10.5. Question is will I be able to fit the new one ( which looks the same ) onto the original fitting and will I still be able to use the same power supply? 
