I picked up my first igoL from a usa supplier.
The air hole was drilled too low on the top cap.
Made it hard to use.
I couldn't seat the top cap all the way down without the airhole being blocked by the deck.
Kinda sucked.
I have since picked up 6 igoLs from ft.
None of them had airhole issues.
But, out of the 6, one of them had a small ish diameter 510 connector, and won't fit one of my
mods.
Another had kind of a large diameter 510 connector and won't screw onto my magneto, but will fit all my othet mods.
For the price of the ft ones, you can afford to buy 2 or 3.
Chances are, most will work great.