Liquitex Varnish for Finishing?

I started using Liquitex Matte varnish a little while ago.  It only took one model for me to be sold on it.  It can be airbrushed straight from the bottle and gives almost instant results with light application.  On the down side, it's not as good as a protection as other finishes.  You can scratch it with pressure from your fingernail.

After using the matte varnish for a couple models, I decided to branch out and try satin and high gloss.  The satin worked out just like the matte varnish, it went on smoothly and gave great results.  However, I haven't figured out how to get the high gloss to work in my favor.  It tends to puddle up on itself, even when airbrushed.

I haven't tried the regular gloss yet, but I think the matte and satin varnishes are excellent.

I'll try this stuff in my constant quest to find a dead flat product that can equal the expensive little can of Testors Dullcoat spray.

I find that the Testors dullcoat puts on the most flat/diffuse finish on anything I try.  I get several models from one can of dullcoat and considering the price of the kits these days I certainly don't worry about the cost of the dullcoat.

Corn starch in an airbrush? Sounds like a formula for a clog.