Why is there a breakout on S/SS combos?

[novassdude]

Originally Posted by 442OLDS

Not sure I really understand the question here. My one and only class win was in Topeka where I went into the combo class.I won three rounds and there was "no breakout".
I have been competing at several Midwest Class Racer events in a SS/S combo.There are heads up races at these events.
What am I missing here? What are you talking about?

Yes the Midwest group does things right. But I think a lot of the association races do not have heads up for same class match-ups.