I second what @"Alex Divine" said. I initially took a month out just to foolproof games. It's really worth it and it will help you get familiar and knowledgable about game types.
I have found a mix of doing both individual games and sections both helpful. If a have an issue with a particular game in a section, I then foolproof that one by itself.
I definitely see that there would be benefits. I don't have time before the Dec test, but I've already decided that if I need to retake then I'm going to foolproof RC