So i got a Mephisto clone with a very protrudind 510 pin, i placed a 0.12 build on it, set my Sigelei for 90 watts and it happened. Sigelei read 0.4 ohms and 6.5 volts. 6.5 volts to a 0.12 build means my 150w Sigelei was actually firing at 352 watts. Anyone had this happen? Rather worrying, IMO. I believe it had something to do with the spring loaded pin going too far in and giving false readings. Mod and batteries are all fine.