Quoted from TheLaw:They are kick out holes but they hold the ball until you lock 2, then they kick them out, or hit one hard enough to pop out This is at the VFW so I don't know if that's a change made to this particular machine?
The Gulfstream at the VFW has a modified rule set that adds a ball lock and multi ball. Stock Gulfstream's only have one ball in the playfield.