Hello all. I am fairly new to vaping. (A few weeks). I have successfully cut my smoking down to a quarter of what I used to smoke and am enjoying the vaping experience. I already have the bug and have done hours of research and have spent more money than my wife would like. I have a tesla and an itaste vv v3. My question is when I put a fluke voltmeter on the tesla set at let's say 4 volts and push the button the fluke reads atleast a volt lower and sometimes more. This stays true throughout all the voltage settings. The only time it's close is when I turn it all the way up to 6 volts. The voltmeter then reads 5.8v. This is all done with a fully charged 18650 battery. When I do the same with the itaste it is spot on with no issues. Is my tesla screwed up or could it have to do with PWM or maybe because it is tuned to rms? I can't figure it out. The vape is fine and comparable to the itaste when they are set to the same voltage. The tesla just reads lower. Any feedback would be appreciated. Thanks in advance.