No, I haven't seen that happen. I'm currently running a twisted 28g ti coil at 0.22ohm, 30J and 345°.
No, its never hit the tp.
Roxy
if you cant hit your TP setting of just 345f
then either the joules are too low or the locked resistance is too high
had the too high locked resistance give me some head scratching
found that a 0.265 coil locked in incorrectly at 0.283 was all it took to throw it out
now I make sure my coils are locked in bang on steam tuners predictions and never have an issue
the M class works fine with Ti at 260-280 with out the test upgrade & at 480 with it



Until I got these Achilles and discovered how much I loved them, but hate the no-clear-tank and having to unscrew the cap every hour (and it's not easy to get it started, I usually have to use the pliers) to check the liquid level and usually find it's just fine... I hadn't really thought much about TC, but when I heard the thing about TC meaning that when the wick is dry, it just won't fire, seemed perfect to me, a built-in easy way to know when my Achilles needs refilling.