Whoohoo...Well, I got a longer screw driver and tore the projector apart.
I took out the lens filter and reseated it.
I don't get the grinding gear noise, anymore, but the red light is still flashing.
The fan seems pretty quite and, eventually, shuts off.
I'm guessing there is still something, at play.
I have light!!!
The one thing that made a difference seems to be placing the glass part of the filter completely over the lens.
On other page, it said that it shouldn't make a difference where the filter is.
The theory was that it would move back and forth in it's test sequence.