I just got mine yesterday and fully disassembled it, including the button assembly. I just found this thread, so I'll be sanding all the contacts tonight.
The switch assembly is a pain to get back together, tighten, then still be able to spin the locking ring. But it's not too terrible.
I played with the stock spring a bit, it's definitely too stiff. I'm thinking of taking a spring from a ballpoint pen, widening it, and putting that in its place. Should decrease the amount of force needed for it.
Lastly, the bottom pin that recesses into the bottom cap I think can be shortened with a dremel. For my Efest 18650 2000mah battery, it's too tight and I can't screw everything tight without putting the positive post way high. Which obviously causes whatever device on top to sit too high.
I LMAO when I read your post....
Not because anything was 'wrong' with it.... It just started with " got mine yesterday....disassembled it"....
Then, I read your username....'Finagle'....guess you would be one to disassemble a new mod !!!
I vaped mine first....will sand the contacts lightly when the weekend allows.
What's with the 'buttons to stiff' thing ?
Muscle up people !
I don't want my mod firing off 'that easy'.