we are aware that when running a four head machine and you have a thread break on one all four stop. Is this a big time restraint on production or with the right digitizing does it seldom happen? We are still trying to decide whether to trade our Melco Amaya(big red) in for 3 new Amaya XTs or to get a new SWF 4 head. The Amayas would each run individually so if there were a thread break the others would still be going. What is the opinion of most out there as far as production wise? Can I produce more on a 4 head or 3 individuals?