Oh there's no particular elevator failure, just that the elevators will be rock solid at ridiculously low speeds. Past 650 km/h trim is practically the only way to move the damn thing. Kind of like 109s, but much much worse. Take any P-38 for a few high speed dives without using the "air brakes", then do the same thing in any P-51 and you'll rip the wings off in the pullout