update - I bought the Igo -w - enlarged the air hole to 1/16" - super glued the 2nd air hole - built a 28g kanthal micro coil 10/11 wraps (thoroughly torched) around a 20g needle - it's about 1 ohm -sterile cotton ball wick material.
I thoroughly read thru the big thread here on micro coils, to learn and ask what I should try to do.
I use it on my Magneto, the SID will not fire it. The 1/16" air hole is most definitely the largest you should ever drill on it.
I tried a hair smaller 1.3mm hole, but that bit broke, it wasn't a cobalt bit. I used my drill press on the slowest speed.
In the end... I am currently in Vape Heaven, this is the real thing, I am still new to this, but if there is a better vape out there, I am going to have to "try it" before I buy it... This is so easy to maintain, it's incredible..and the taste! - foogettaboutit..
I will be wanting to try an rba some day, but it will have to exceed in simplicity and vape to place itself next to the cheap igo-w..