Saw that Wotofo has come out with a BF conversion kit for the Sapor and Lush. Picked up a couple to try them out since, from the photos, seems as if it would work with other attys as well. It's FT, so probably won't have them in hand until October.
Link to listing on FT: $4.65 Authentic Wotofo Bottom Feed Conversion Kit - for Wotofo Sapor & Wotofo Lush RDA atomizer at FastTech - Worldwide Free Shipping
Link to listing on FT: $4.65 Authentic Wotofo Bottom Feed Conversion Kit - for Wotofo Sapor & Wotofo Lush RDA atomizer at FastTech - Worldwide Free Shipping