I just baught a 2009 Z06. Immediatly noticed a ticking sound coming from the engine between 1600 and 1850 rpm. I took it to two different dealers and they heard the tick but could not figure out where it was coming from. They said to continue driving it and see if it gets worse. My problem is that I paid $70,000 for a car that is making a noise and I don't want to just keep driving it to see if it gets worse. Has anyone out there experienced this problem and been able to resolve it? Please help.