Josh,

What I used to do was slop the paint on and then take an old phone book squirt some lighter fluid onto a section usually covering a full page then after the enamel had dried for about 15 minutes run the plate over the phone book page soaked with lighter fluid. It pretty much removes most of the excess paint in one swipe across the book if you need more just turn the page and wipe again then just let it dry and wipe off the rest of the film.

Now keep in mind I did this over 20 years ago and it worked pretty good back then.