M. Brindos
Now, before you spray the model again we're going to try an experiment. :)
If I remember correctly, you are using a top loading AB, correct?
All you will need to do for this experiment is to add a drop of Dawn to a medium sized paintbrush and stir it into your paint.
Add a few more drops of water and spray on a test model or piece of clean paper to check how the paint flows.
Is it soft-edged, or does it still splatter?
Just so you know, this is something I just learned not too long ago as well. It didn't work at first because I didn't have the proper ratios, but once I added a drop of Dawn to the paint in the bowl it worked like a charm with regular craft acryllic paint. Works with Vallejo as well.