Have my T3 on my X2 auto. Works great. Actually helps with the airy draw that I noticed when I use it on my manual X2 or my
innokin Lea Cross with 510 to ego adaptor. Really want SI's version of T3. To get the T3 on my X2s, I
lightly pushed down on the T3 while slowly screwing it to the X2. No
thread damage on X2 (which is why I tried it with my auto first so I wouldn't damage my every day use manuals.) Tons of vapor, but I actually like the flavor from the X2 clearos better. T3 reminds me of a mega reservoir nano.