Quoted from pinwiztom:On the AAB version Ice Show,
that passive bumper at middle top
was switched out for a pop bumper,
also at the bottom there are 6 outlane drains not just 4 as on Ice Review.
And interestingly, the Ice-Revue flyer does show 6 outlane drains, even though there were only the 4 outlanes on the actual machine produced: