I built my first nicostick last night. I am using a Radio Shack box with a AAA x 2 battery holder. I have put everything together and I have juice going to the post. ( I do not have a voltage tester so I don't know how much) I have ordered two of the Trustfire batteries to go in the box but they have not come in yet so, being the impatient person I am, I put two rechargeable AAA batts in the box. There is very little vapor production from this setup is it because of the voltage on the rechargeable AAAs or is there something else I should check?