Thought I would post this just in case it helps some poor soul (like myself) who thinks they are losing their mind and just can't get it right.. or bought a piece of crap that doesn't work. I started building my coils about 2 months ago and have had nothing but trouble since. I have many tanks but prefer the warmth and flavor of the subtank mini (now I have 7) I also like the fact that they include an Rba with them. starting with ni200 wire I was having problems. build all 7 coils on sat for my fun time (and learning time) and then one by one juice one and puff a couple times then it starts hitting temp protection every puff. Figuring it was the finicky wire I switched to Ti and stainless a couple weeks ago. Last night i buit 3 coils and all three did the same thing. Today I was just in the mood to figure this out since nobody in my local shops could see anything wrong with my coils. got in from work and started taking them apart to see what I could see. first thing I checked was the very bottom of the deck (the part that makes contact with the bottom section of the tank pin) it WAS LOOSE! tightened it and tried it and it worked. a little while later it did it again. took it off ..loose AGAIN! put it back on but this time didn't tighten it too snug on my mod and it hasn't messed up again
I think when screwing the tank on the mod the pin on the tank turns and loosens the deck pin on the rba. checked the others I built and then tossed back on the desk after they failed...ALL LOOSE! ps-this happened no matter what mod I put them on so its the tank not any of the 5 mods I own. hope this helps someone out there!