Well try a method called Cadence braking. Setting brake balance is all well and good, but if you're just slamming the breaks on at the '100' boards, then you will lock up wheels. Cadence breaking: Apply the breaks, as the wheels lock up, instantly lift off the brakes, then reapply. Keep doing this until you slow down enough. I find you can break a good 15m later than if you just slam the brakes on.
Good luck!!
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She says brief things, her love’s a pony
My love’s subliminal