Level 14 is a serious pain in the ass. All you can do is put Santas on the lever and hope that the right size snowball hits it in the right place. I took 93 Santas to finish that level, and of those, only 10 were required to get to the point where I was "aiming" for the chimney. When you're using a game type that's based on skill, random chance should never enter into it.
