" do I have to use gasoline ? I don't like the smell  ; can't I just put water in the fuel tank ? "

First  , what's with the beeswax ?

Is it double acting AB ?

Assemble it without the o-ring  , put water in the paint cup  , depress the trigger for air only  ,

do bubbles come up into the paint cup ?

Get an AB that doesn't use an o-ring there .

My Paasche Talon doesn't .