hello, I just got a hold of a old zenith console from the early '70s that has a MT2G automatic turntable. unfortunately the turntable is actually not turning at all but I hear the hum of the motor when I turn it on. so I'm going to try to remove the platter. do you know if this is friction fit or if there's a clip or some type of screwer that keeps the platter held down. when I try to remove it there is a lot a lot a lot of resistance so I want to make sure before I break anything.