Ok just built it. I had to make some adjustments. The drop read 3.5 volts on a 1.2 ohm single coil. Btw the ERA fits beautifully

I removed some paint at the negative spring. I also replaced the positive tab with an authentic positive tab. Reads 3.8 volts now woot ! Nice
vape. Pretty much the same drop as a real REO. My authentic reads 3.9 volts probably because the 510 connector is still brass. The clone body is definitely aluminum. The firing button is smaller, and lighter to the touch. I kinda like it. The diameter is smaller on this button. I could always sand down the real one if I wanted to. But it's not really bugging me. For 25 bucks this
mod is a steal. This will make a great
mod for work. This Inawera Classic Camel is tasting mighty good right now

Oh, one more thing. The bottles are soft plastic.