The elevated liquid port (combined with the 510 extension) does mean you have to squonk fairly hard. It also makes it impossible to suck juice back into the bottle if you over squonk. I tip to feed after using about a third of what's in the bottle. All in all I don't think it's well designed for a bottom feeder. I got it because I wanted an rba for a bottom feeder and only knew of the A7 & the RM2. This will work OK but needs some modding. Not sure if I want to do the tube mod so I don't have to tip or come up with something to fill the cup so I can reverse squonkBut Im thinking in a differnt RA, the Reomisor2, it gets its air from the top, liquid from the bottom, Im worried about the A7's elevated liquid port to feed the wick, the RM2 is a ceramic basin that can support the coil without shorting , pool the liquid to the wick, not sure about the tipping of the Vmod wether a hose is needed or if wick blah blah not sure

They have something called Isocol which is heavily fragranced. I tried that once to clean my old EGO-T atomizers (was that only 18 months ago?
) and let's just say it rendered them unusable.
)