Anybody got any ideas;

I made a custom (Wraith) and the paint won't quite dry! I've tried air, heat....no matter what, the paint stays "gooey". You can wipe it off. Any ideas on what I can do to fix it?

Acrylic spray has been suggested. Anyone ever use it? What were the results?

I ask because I started teh figure with a light coat of silver testors paint. When that didn't work, I tried a chrome spray paint (after wiping off what paint I could from the first coat) and it still came out gummy!