Hmm, I don't think it should be up over by 1.1ohms. Then again, you might be getting an inaccurate reading. Try a standalone voltage meter, perhaps.
On the Lavatube, there's an option to get voltage under load, and I see some strange numbers once in a while (2.9v when I'm bumped up to 5.5v on a 3.0ohm atty).