Are you actually using RxW from RBA Supplies? I think I was confused but I went back and re-read your OP and it would seem you are using the 3mm RxW. Please correct me if I am wrong!! If it is in fact 3mm then you would get better result's with a 3/32" coil. As to the spaced coil vs. tensioned, I've never had any luck with spaced coils at all. They gunk way too fast and I don't get the same juice flow as I do with tensioned coils...or so it seems to me anyway... You would thread the 3mm into the coil the same as the 2mm into the 1/16" coil. All my coils are wrapped on mandrels from the Artistic Wire Gizmo. They all are tension wrapped. As I mentioned, I have never had a spaced coil that vaped well... I actually bought some 3/32" rod that I formed to use because the AWG doesn't come with a 3/32" mandrel. There is a pic of what I made, (
http://www.e-cigarette-forum.com/fo...ed-micro-coils-next-step-30.html#post15523755), in another thread. As to expanding the wick, I have never felt a need to do it, though there are some here that feel the need to do it. I have noticed on all my builds, the wick has a definite core after inserting it into my coils so never felt a need to try and open it any further.
I can't help you on the ni200 or temp control as I have never had, nor felt I ever needed any device that was regulated... The closest I ever came to regulation was using a Kick module, (2yrs ago), in one of my devices and though I guess it was nice to vape something consistent from one hit to the next, 10w was just not enough power. At one time using stick atty's it was ok, but now with rebuildables it is rendered useless in my arsenal. My coils that I vape are in the 50-60w range already depending on what I feel like building at the time. If I want to vape at one particular wattage, I just build coils to do so. Coils are easy to wrap and install. Kanthal is cheap... As to anything regulated....it will fail at some point. That has been proven time and again in the last 4yrs. It's inevitable and IMO, expensive. I haven't had a mechanical fail on me in 4yrs other than a spring that has dropped, and that was easily replaced. Just look at all the problems with the DNA's in the last 3yrs...or just in the last 10 months. I know that Evolv will warranty out some of the chips, but the down time on a $200+ device is IMO, not worth my money or time...
Maybe someone that uses temp control will come along and actually have some better answers, but this is a Reo sub forum and the majority of the posters here are mechanical users...