idle problems
 

I just replaced my head gasket and most of the other gaskets on the top end including a new oil cooler set. I had coolant in the oil a while back and decided i needed new gaskets. But now the car isn't idling like it should it gets really bogged down below 2000 rmps and will stall if you dont give it any gas, above 2000 it sounds just fine. what should i check and is there any special procedure i should follow after a new head gasket is installed?