LOL. Oddly enough, I have no trouble getting Pikachu and the Articuno shot, EVER. XD I can get it 98% of the time when I try now. And I loved the game a ton a few years back. ^_^ All you have to do is throw the pester balls highish when you go into the cave, but throw them as close to the side of the cave wall as you can, and you'll hit the Zubat or whatever was carrying the Pikachu. >.>