We just obtained a used Fadal which looked to be in great shape. However, once started we noticed the z axis motor is getting very hot. We measured the case with a temperature gun and it is running around 150 f - not good as I am told the motor will fault at around 155 f. This motor model (Glentek 6000B) does not come with a brake. We think it may be something mechanical or perhaps the backlash. All advice would be most welcome in solving this problem.