Yes that's the thinner just in a smaller bottle.

Currently trying to resolve another issue now, the airvalve for my Iwata the connects to the hose and screws into the bottom of the airbrush, the piece that allows air to flow into the brush when the trigger is pressed down, seems to be getting stuck closed, I took it apart and there's nothing inside to clogg it but I am getting mositure in my air line that's making it past the moisture collection cup and into the line I believe that it's causing the o ring to slip up the rod instead of staying in place