Hello, I'm looking for a runtime kit for my TK75. Any kit will do, but I have the 2018 version, so preferably one that matches that light. But again, any combination of extension tubes and battery carriers (not the carriers with the USB port; Fenix says you can only have one of those in the light at a time, and I already have one) will work. Looking for a few kits, if I can find them! Thanks all :-)