Hey Nic_Fan; there are digital voltage meters you can either assemble yourself or buy from MadVapes or CloudsoFVapor. On these, you can measure the voltage by directly screwing them onto the 510 connection, at which point when you press the button the Voltage will be displayed.
On the other end of that same digital voltage meter is another 510 connection (female), into which you can screw on an atomizer or cartomizer. When you do that and the male piece is screwed onto the mod and you fire, the meter will display the actual voltage under load.
Anyways, cleaned everything and got the exact same numbers. 4v+- w/o an atty, with an atty voltage drops to between 3.2-3.4.
Thanks for all the suggestions, but this baby is going back to its creator. Luckily I have a Grand to hold me over in the dark days to come.