Posted November 16, 200718 yr Winehouse's tour manager quits job Amy Winehouse's tour manager has quit, claiming that the "nightmare job" was ruining his health. Thom Stone allegedly found traces of heroin in his system from passively inhaling the fumes when Winehouse and her husband Blake Fielder-Civil took drugs. As a result, Stone showed the singer a doctor's note last month warning her that the pressures of being her tour manager had been ruining his health. A source told The Sun: "He was constantly bailing her out. He was watching them get off their head on drugs and wondering whether Amy was even going to get up on stage. It was a nightmare job." But a friend of Winehouse insisted that they did not want him working for them anyway, saying: "When he produced this note Blake and Amy thought it was a joke. They didn't get on with Thom and were taking the p**s when he tried to pull that excuse to leave. "They wanted rid of him anyway." Winehouse kicked off her UK tour on Wednesday in Birmingham but disappointed fans ended up walking out or demanding refunds because of her 'shambolic' performance. She had spent the day visiting her husband in Pentonville Prison where he is being held for charges of perverting the course of justice, stemming from a case of alleged GBH. DIGITALSPY