I don't have too much of a problem with the pie factory level, even with 4 or 5 fireballs, although once in awhile, I do get cornered. My biggest problem is starting about level 3 or 4 on the barrel level, when you go to the 2 ladders under Kong. Either the barrels are coming at me the wrong spacing, or he drops one on me. I don't know how to prevent the latter situation, as you have to go that way, since the only other ladder on that row (at the right side of the screen) is broken.