[Mr V]

My thoughts are that once a ball is scored in a goal it no longer counts as a ball for the purposes of being controlled. The end game scoring is based on moving the rolling goals to either the parking zone, the ramp or off of the floor. I doubt that the intention is to make it so that they can not be moved to those locations if there are more than 5 balls in them. Since they can be moved at other times you could move them to that location first and then fill them up but again I do not think that is the intention. Of course we need an official ruling to know exactly what will be legal.