You probably missed i in the big flood of posts about repairing grounding the other day, but I have already had to fix my 510
It was the Taifun GT2 clone wot did it, actually. Well combined with me screwing it down too tight I expect.
I was driving and vaping, and the resistance was going all funny. Sat at traffic lights I tried to unscrew it, and couldn't understand why it kept turning and turning and turning. Looked down, and oops, the 510 washer plate was loose from the board and spinning freely.
I removed batteries from the unit (still at the traffic lights.. and possibly a little as I was driving away from them..) to prevent any risk of major damage.
When I got home I took off the top plate and found the 510 nut had unscrewed almost completely. And of course the Taifun was still attached. Took me at least half an hour to manage to get it off, it was the devil's own job to re-tighten that nut enough that I could get enough leverage to unscrew the Taifun.
Eventually I managed to get it all back together - I used a spanner to really crank that nut down hard. Seemingly no damage to the wires or the 510, and it's been fine since then. I am now being a lot more careful about screwing things down of course
And I took the opportunity of having the top off to do the top plate/mating surface sanding, just to head off any future issues - I didn't do it super thoroughly, just with my Dremel knock-off ("Rotary Tool") and one of the sanding heads.
That info about the Loctite is very interesting - I have two Magma clones and they are indeed very well endowed, far too much so. I'm used to them not being flush. Maybe I'll consider that in future. Does it have to be special conductive/high-heat epoxy, the kind Willie was talking about a while back?