Hi Jive,
Can you post your order # so I can see exactly what you have? The 2.5 Ohm cartomizers we have are for the Dual Coil Tanks...but I'm getting the feeling you don't have a DCT so I just want to double check.
If they -are- 2.5 DCT cartos, they don't really work well at 3.7 volts. The...