LOUDON, N.H. >> Kevin Harvick warned he was charging for the lead with taps on Kyle Busch's rear bumper over the waning laps. Harvick had failed to methodically work his way around the race leader with a clean pass, so he set aim with his Ford on Busch for the knockout shot.Harvick nudged the right side of the Toyota and jostled Busch out of his groove and three lanes up the track.