My pleasure. I use that technique quite a bit to clean up lines. I did the headlight buckets on my Reher Morrison car the first time I realized that ammonia removes Acrylic paint. i got super tight separation and those buckets look good. I use it for panel lines as well. I also used this technique for the blue/white seats in my Malco Gasser mustang. By using Duplicolor enamel for the white base i was able to use Tamiya metallic blue for the blue tuck and roll for a very clean appearance. Go with what works, find new ways of doing things. Keep on truckin.