The business partner of a Zumba instructor charged with running a prostitution ring from her dance studio in Maine is seeking a delay of his trial. An attorney for 57-year-old Mark Strong Sr. of Thomaston has asked a York County judge to allow him more time to prepare for the trial that is scheduled to begin next week. Defense attorney Daniel Lilley is seeking a new trial date of Feb. 19. Strong is charged with promotion of prostitution, violation of privacy and conspiring with Alexis Wright, whom authorities say ran a prostitution operation out of her Zumba studio in Kennebunk. Wright is being tried separately.