I just received my first Micro 4/3 gear today, EM-10 and Panasonic 12-32 lens. The EM-10 seems well built and will still have to figure out how to operate it properly. Even though I love the size of the 12-32, I'm suspecting I got a defective lens due to a strong "loose part/component" type of noise. I'm not talking about the OIS when the system is powered, but a strong noise (and feel) of a loose part when I move the lens or gently rotate it around its axis. Anywone else with the same lens experiencing this or should I just send it back?