The Kyurem in BW2 is in a noisy area, meaning that there will be random unpredictable unexpected pidrng frame advances, which would indeed lead to this. As for timer0, that's just the way it is unfortunately - there are no common ones in BW2 (and if there are you're extremely lucky), so you'll just have to roll with the punches, using chatot pitches or similar to confirm your seed.Thanks again. I'm now trying to do my DS parameter calibration for White2 but having issues with that. I've already done it with Black2 and it wasn't that difficult. After about 20 tries, there was one timer0 that I was clearly hitting more often than the others and I've already managed to RNG a hidden grotto pokémon on it just fine. On White2 now however, it's a real pain for some reason. After about 40 tries, I have about 11 different possibilities, of which there are 7 that I hit at least 3 times and 4 that I hit only once. I hit the same second every single time so that's not the issue. Also, is it possible for one timer0 value to give you pokémon with different natures? I'm using kyurem for the calibration and I've caught a quiet one 8 times and that was 10E9, but I've always caught a timid one 3 times hitting the same timer0 and the same second... Very confused about that.