A jury in Essex County has convicted a 43-year-old man of breaking into the home of a man he once had a sexual relationship with, kidnapping him and brutally beating him, authorities said Friday. James Pilotti, of Union City, was found guilty of kidnapping, aggravated assault, weapons possession and aggravated assault by strangulation on a domestic violence victim, according to Acting Essex County Prosecutor Theodore N. Stephens, II. The jury was deadlocked on a charge of attempted murder, Stephens said. Four days before the kidnapping, Pilotti had been released from jail and placed on probati…