Paintstormstudio.com

I want to love this program, but the help section is lacking for the beginner user and I'm having some difficulties understanding the brush settings.

I'm trying to figure out what is causing paint from my last brushstroke to transfer to the beginning of my next with a new color. I've tried playing around with color amount, opacity and transparency. I have extends color OFF which I would think would be what causes this. (Image below)

I am also trying to figure out what translates from photoshop brush setting talk to paintstorm. A lot of photoshop users talk about "Flow". Which setting would this be closest to in Paintstorm?

I'm trying to figure out what is causing paint from my last brushstroke to transfer to the beginning of my next with a new color.

You must enable "Dyrty mode" in the COLOR section

A lot of photoshop users talk about "Flow"

Flow in Photoshop = Opacity in Paintstorm
But in photoshop you can also enable "airbrush mode" - this mode continues drawing if you don't move the cursor. You can simulate this effect by little wiggling of a cursor at required area