Gundman Markers for Panel Lines

Any trick to using these? I've tried them, but they dont apply consistently or dry up quickly.

Ive used Gundam markers before to try writing the emblems on but the color just fadded into the car's paint job and it looked like i had done nothing to it. After asking around the hobby shops and posting thread on here, I just stuck with a very very very thin brush, some paint, and several hours of patience.

I have one enamel-type Gundam marker, and I couldn't get it to go where I wanted at all. :(

My favorite for panel lines are the Pigma Micron brand by Sakura "005" size technical pens. I usually just draw the lines over the paint, but I think Bob has drawn them on between the primer and paint, and that looked pretty good.

well I use them for many year and never had problem.
you just have to write on a paper every few seconds to help the paint flow, but beside that, they work perfectly.