So i have a kanger T3'D with a 1.8 coil in but my istick tc40 reads it at 3.50ohm that is when it reads the it all i know that is for a duel coil to hit 1.8 ohm the coils should be right about 3.6ohm the thing i am wondering about is what wattage should i run it at without burning out the coil none of the power charts say anything about duel coil set ups.