A hot rda is normal due to the heat of the coils, especially if you've been chain-vaping. Just take a breath and let it cool down. A hot mod near the top cap where the rda is can be normal as well just from the heat from the rda (conduction? someone correct me), but by that time it should be pretty uncomfy to hit unless you got asbestos lips. A hot battery or fire-switch is never good (as in arcing or venting). My suggestions? Do some research on some safer batteries (my mxjo 's say 35a as well, but likely that means 35a pulse/20a continuous). You could just take the plunge into regulated boxes. I know they aren't as pretty, but they come with a slew safety features (in most cases) and you can build a whole range of funky sub-ohm coils and blow clouds by adjusting the wattage (just keep an eye on the voltage output). There's a ton to choose from based on your needs. eciggity.com is a popular choice for browsing, vaporrange.com is another. Or just hit up your local B&M and ask for some suggestions.
