To get markets that don't clear, you have to add (usually nominal) rigidities and imperfect competition, at which point your model becomes New Keynesian rather than RBC.

(NK models perform a lot better at forecasting, but a lot better than "fucking terrible" is still not good.  Put it this way: Last I read, internal Federal Reserve forecasts were still putting both to shame.)

Be nice to America. Or we'll bring democracy to your country.