Ever have one of those days? I was vooping my low tank DNA40, my favorite "around the house" mod, with a Fogger V6 on it and it went south, like to cut my throat with the burn and harshness. I had just rebuilt it with twisted 30 gauge Ti and it was doing a great job a 30 watts, then BAM! Lowered the power down to 15 watts and still cut my throat. Now, keep in mind the last set of coils, 28 gauge not wrapped, lasted about two months.
So, into the office and checked it out. Sure enough one wire had broken off at the post. So, I tore it apart, cleaned some more 30 gauge, ran downstairs and twisted it up, came back up and whipped up two more coils. Installed the first one fine, but the second one ended up broken at a coil post.
Got ...... and ripped them out. Cleaned some more 28 gauge and whipped up some six wrap coils out of frustration. Again, the first one went in fine but the second one snapped at a post, the same post. I'm a slow learner at times, LOL.
YiLoong over drills the holes under the wire hole and that makes them into guillotines. I stuff those over drills with wire, but this one post must have settled or changed somehow with use. I ended up re-stuffing the thing and now am back to untwisted 28 gauge coils, until I rebuild it again.