Old Vaper with newbie question

Hi all. Been vaping over ten years now, this Forum was tremendously helpful to me when I got started but haven't been back for awhile. I need help on a new setup. Ive been vaping on 510 dual coil cartomizers, double punched, in a tank for years now but the carts are almost impossible to get now. I am a mouth to lung vaper and use a 40W box mod at 7.7W with a 1.5 or 2 ohm cart. Started at 24 mg juice but down to 4 mg.
I am technologically challenged so hopefully I got all that right….

Old Vaper with newbie question

Original source: https://www.e-cigarette-forum.com/threads/old-vaper-with-newbie-question.966169/