I'm at my wits end with these downlights. I finally cracked how to get the bulbs out (literally brute force pull them down somehow, no twisting here sadly) and went to replace them with some decent bulbs to find that the new bulbs just slip straight out. Am I being a moron and are these downlights designed for a specific bulb type? The socket is obviously GU10 but I can't figure out why a 'standard' GU10 bulb just flops itself back out... very frustrating