Lost on won and done,then crashed

here is one of his runs at speedworld. straight as a arrow. im really wondering why it got squirly, maybe low or old slicks? oil down earlier in the night? strange it ran bad, then good 2x, then crash. do you remember what lanes you ran in each pass?

[ame="http://www.youtube.com/watch?v=LijDbT3Wohk&list=UU2UfycLWJQRo0DnRrnW3KxQ&index=36"]Mark - YouTube[/ame]