I'm no expert so take this with a grain of salt, but you seem to be losing a lot of points on RC- and that happens to be my strongest section. What questions tend to trip you up there? Are particular passages, e.g. science, topics more difficult for…
I would second Hopeful's comment about question types.
And, since you're able to correct yourself in BR, do you think you're losing marks because you're going through the section too quickly? It might be worth taking a slower approach to the sectio…