Wow, when you said you had a leg length of 27mm, I thought that must be wrong, but I had forgotten you're using the post holes for the legs. I would really consider trying to use the screws rather than the post holes. The reason is that your legs are long, so you'll be pumping out a lot of heat that doesn't make it to the wick. I know it's trickier to deal with the screw, but if you wrap the leg all the way around it, you should be be able to get it tightened down securely, and don't worry too much about the coil getting out of whack when you do that. You can straighten the coil out with your screwdriver (or whatever you wrapped it with) after both legs are screwed down.
Of course, if it's working well for you the way it is, then no need to change it. But, next time you try rebuilding, you might want to give that a shot.

