Which pin have you ever played or owned had the worst airball problem?
I'm going to go with Lost In Space, the one I own. At least, so far.
Reason: When the ball is shot hard and it catches the upper lip of the spinner disc opening, it launches it up and into that poor little robot, time and time again. The ball flies off the playfield like a redirected hockey puck! Surprising, poor little robot hasn't broken yet.
Also, the "launched" ball likes to get stuck between the plastic "sandwich" on the middle right side of the playfield under the Bubble Jet Fighter. Also way up in the upper right playfield corner behind the 3 colored flasher domes.
BTW, this is one of my favorite no frills, just plain fun to play pins!