Nice succulent collection Mark! I also have the string of pearls, it is also growing cranky on my side..I think it prefers to be in a shady side. I notice it resumes its nice growth when it is cooler/shaded, otherwise, it wrinkles in the heat. So I try to help my plant by giving it a good spray of water before the hot sun hits it, seems to work, especially in my area where it is still in the low to mid 90's during daytime.
Love the blooms of your string of bananas..does it also have a cinnamon-like scent?