I have a Bulli A2-T and would like to get some back-up wire for replacing coils, I've found several sites that sell it in small quantities, I'd rather buy a spool but I don't know what specs to look for. Most sites list ohms per feet and gage. I don't know how to convert this to what I need to make a 2.5-3.0 ohm coil. Which is better, nichrome or kanthal? Also, I'd like to buy some replacement stainless steel mesh for the wicks, anyone have a good site in the USA that sells it by the square foot. I understand that 400 mesh is what I would need, anyone know the correct alloy as I've seen several. Thanks.