Quoted from rooftop:the left ramp has a cut out before the last incline, if the balls not traveling fast enough out it goes, i have played older I'm's that don't have that feature.
No, that cut out has been there since the ramp was used in Austin Powers. They wouldn't have been so silly as to sell a game where the ball could easily get stuck on a ramp and not have any way to get free unless they called a tech out.