Put batts in,fire the device with probes on box center pin and outer rim. get reading.If it reads same as battery screw the clone into device,place probes on +/- Posts fire it again, if it reads low than it's most likely the clones center post not making good contact with the battery connector,loosen the nuts,adjust center post,tighten the nut up and fire the device(take a multimeter reading). Let us know if that does it..
Not sure what you mean? The hole in the top cap has very little room under it and it is all occupied by the center post? Oh - never mind, you mean the small hole in the side - yes I line that up with the wick.
I just tested and got 2.99 volts vs. 3.73 on the battery......maybe the problem?