Ace hardware....they have a wide selection of springs. I just had to buy one today for my launcher v2. The spring that was in it might as well been 20g kanthal cuz I got some kind of hot on sub ohms. Spring was 75 cent. And no more hot button. Side note home depot had disc magnets that might work in your mod they were jus a hair to big for mine
It can get humid out but its one thing I've lived with most of my life so its not bad to me. Where I live there is about 2,000acres in my back yard that I have access to for fishing and hunting. So my deep freezer stays stocked year round with game