OK, so I'm saddened to report that I grounded my plane last week. Landing in the rain, at night, I feel like i carried too much speed into the landing, and after touching down a little long, tried to brake to slow down. My assumption is that the left brake either caught or locked, but the right didn't brake well or at all, and I yawed off the runway and hit a taxiway sign. Got a couple small dents in the leading edge of the left wing, the biggest one right on the stall warning vane. FAA paperwor