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Slated to roll off the grid ninth in Sunday's AAA 400 at Dover, Martin Truex Jr. had to start from the rear of the field for unapproved adjustments on his No. 78 Chevrolet for Furniture Row Racing.
Truex's car was on the grid during pre-race ceremonies when a NASCAR official was looking at the right rear wheel well and saw something they didn't like, according to NBCSN. The car had initially passed pre-race inspection.
Truex's car was brought back to go through inspection and the team had to alter the rear opening. It took about 15 minutes, according to NBCSN. The car was rolled back onto the grid prior to pre-race ceremonies getting underway.
The driver of the No. 78 rallied for an 11th-place finish, and he advanced to the Contender Round in the process -- although after the race, he was still perplexed by the ruling.
"We didn't do anything the other teams don't do," Truex told NBCSN. "NASCAR tried to make an example out of us today for some reason."