http://www.tamiya.com/english/scale/beginner2/2.htm (bottom of the page)
Use this as a basic guide for paint layering. Even though the brands are different the strategy is always the same. I'd say you were lucky before. I wouldn't even attempt to clear enamel with lacquer unless it had been drying in my dehydrator for a least 1 year, that's right 1 YEAR.