This happens to me with RC. The more you BR, the more you'll see where the overconfidence errors are. And make sure you're watching the videos for the questions you got wrong!
... your BR, underconfidence errors, and overconfidence errors. Patterns don't just ... structure as well. For example, overconfidence errors could be not diagramming ...
I go over any circled questions. My reasoning is that I shouldn't be sitting the LSAT if I'm likely to make an error with bubbling - I should be comfortable with it by then.