Hurray,
I'm calling it a success (so far)!
I again watched one of James Hopp's videos on the single bearing vs double bearing quills. It seemed to me he emphasized that the splined drive coupler should be replaced when replacing the quill. There was no way I could see to access that old one on the PowerPro headstock without taking out the drive shaft. So I called him for guidance. He suggested, as many of you did, to just insert the quill into the old one and put the new ones aside.
So, I decided to use the Shopsmith double bearing one with the old coupler. I'll save the single bearing one from James to use if I run into the problem in the future.
I think in the future, I'll use the tailstock whenever I can so to take the extra stress off the shaft, particularly when rounding and getting a blank balanced.
As you get see and hear in this 1 min 22 second video the machine is much, much quieter and the violent vibration is gone. With this very, very hard Honey Locust wood, it seems I've got to sharpen the gouge every couple of minutes. https://youtu.be/15r_qqTzN6U Also, since the quill slips sometimes, I know I've got to tighten the belt. Per Jim's customer service notes, it's better the tension be too loose than too tight. He notes too tight can cause it to overheat and damage the electronics.
Thanks everyone for all your help. I sure learned a lot about this machine and also that I can perform a bunch of the repair and maintenance that I was too intimated to attempt before. Thanks again,
hal
Noisey Power Pro Headstock
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