A hot button is a sign of needing a cleaning of all conductive points in many cases. If your mod is heating up from your atty, and the button is similarly warm, and the battery isn't hot, it could be just heat working it's way down, but doubtful and I wouldn't find out the hard way. My mods all are copper, and they will get warm from chain vaping, but not the switch. A hot button suggests that somewhere conductive has more resistance than the switch, and the electricity is traveling the path of least resistance. I'm not familiar with that mod, but I suggest a complete disassembly, and thorough cleaning, of at least all the threads, the contacts, and the innards of the switch. Do that, and see if the problem remains. A loose part in the switch could be problematic, too.
What are you using, atty-wise? What is your resistance, too. That's important to know. What battery, as well. You really shouldn't experience a hot button, so I'm guessing a cleaning is needed. Hot button kinda means stop vaping on it. Mechs are really pretty simple, so any time there's a problem, I start with the atty connection, and if that's good, it's time to disassemble and work my way through everything. Also, re reading, that loosening nut could be the issue. I use some rubber coated gloves to tighten things up, I prefer them to screwdrivers. If the nut goes from loose, to fully backed out, depending on the design, you might have the mod start auto firing on you. Also, do you see any black spots on the negative pin? If so, it's a connection issue, and that's arcing.
Even some clones of mine that have switches which need to be pressed in certain spots to fire best don't get hot buttons. When I've had it happen, I had a raised bur on my negative pin, thus the electricity was finding it's way to the switch, and barely firing the atty. sand paper fixed that.
Really, any new mech, or even new to you, should be disassembled and thoroughly cleaned. It will not be a bad thing, plus it gives you more familiarity with your mod. Even my one authentic, a copper Vanilla came so patina'd that I had about a good half hour of scrubbing. I use bar keepers friend, it's a couple bucks at Walmart, and with a toothbrush it cleans things up very well.
Something isn't right, so just work your way through the entire mod, get it all nice and clean, and see if it persists. I'm tired, so I think I covered most stuff and made sense. There are more knowledgable people than me who I'm sure can chime in as well. I see you're in Colorado as am I. Welcome!
