Well....there you have it.

1.81 + 2.5 = 4.31oz minus battery.

Bill, just wanted to let you know, I have everything up and running on it now. I had it hovering in my bedroom for a few seconds.

Does your AXI get warm? This one gets a little toasty, maybe it was just because it was hovering. Nothing else gets hot, just the motor, or is it just because its not broke in yet? According to the instructions it doesnt need to be broken in though. I didnt let it get too hot though.