By 1979 Darrell had achieved the designations of certified clockmaker from the American Watchmakers-Clockmakers Institute as well as a Craft member of the British Horological Institute. By 1983 he was managing both the repair facility and the retail store Craft Clocks. In 1986 he decided to move off on his own and created Jordan Clocks, Inc.
Over the years he has seen literally thousands of clocks; spending thousands of hours burnishing pivots, rebushing movements and mastering the often-challenging science of clock repair. He has established himself as one of the foremost repairmen in the field of horology and Jordan Clocks has become one of the most recognized names for clock service in the Chicagoland area.