Hello, I recently bought a custom made dna200 box and I updated it to the latest firmware (sp3) and I'm in need to measure internal resistance. Since it wasn't set when I bought it I did some research online and I bought this tooL:http://smokefreemods.webs.com/apps/webstore/products/show/6619269 I followed all the instructions on their youtube link, I set the internal resistance to 0, press upload to device and opened atomizer analyzer and then I screwed in copper 510 tool. All I get is a question mark and no actual internal resistance value of any kind. Am I doing something wrong? I've read in some other posts that might me that my internal resistance is lower than 0.002. IF I set that in mod resistance, either 0 or 0.002, the vape is super hot in 316L (dual coil, spaced). To get a "normal vape", meaning that the temp seems to be correct (compared to my other dna200), if I set internal to around 0.009-0.01. Also several of my atomizers jump out of TC (all with 316L coils, all spaced, no shorts or hotspots). This thing is driving me crazy. I seriously doube that there isn't any internal resistance. Thank you for any help