Combatants in a lawsuit over construction problems at the Broad Collection museum now rising in downtown Los Angeles have decided to keep their work gloves on to finish the project before taking them off to fight over who’s to blame for delays and alleged cost overruns.

The Broad contends that problems caused by the subcontractor hired to provide the museum's distinctive concrete and glass exterior drove up costs by at least $19.8 million and set the museum's planned 2014 opening back by at least 15 months.