How did #42 car pass inspection before qualifying but fail after?

Kyle Larson was removed from the pole position Friday because his #42 Chevy failed inspection after qualifying with an improper rear decklid fin.

But the same part was found to be in compliance in inspection before qualifying. How did that happen?

NBCSN analyst Steve Letarte explained during practice Saturday morning at New Hampshire Motor Speedway how a part that isn't supposed to be adjusted apparently was between the first and second inspection.

Watch the video here for Letarte's analysis of the penalty, which will drop Larson to the rear at Sunday's green flag for the second consecutive race.

--- NBC Sports ---