He attempted four more races but failed to qualify for them. Diercks returned to the team in 2007, running an additional seven races. On June 29, 2007, Diercks and ML Motorsports mutually agreed to part ways.
70 car for ML Motorsports. He made his Busch Series debut in 2006 in the Circuit City 250 at Richmond International Raceway. He made a total of seven Busch Series starts in 2006 with a best finish of 28th.