I just received my incubator and turner a couple days ago. When I plug the turner in, it is making a clicking sound. Not very loud at all, about the same volume as the hum of the motor. The directions say if the turner is making a clicking sound, this indicates an overload of the turning mechanism. The incubator is not even on the turner, so it is not overloaded. I used some WD40 on it and it has not made any difference. Anybody who has used one of these, does it usually make any clicking noises at all, or does it usually run silent?