Joe, Tammi, and all the others who have been helpful - here is the update and a few additional questions -
The mere thought of me approaching the machine with a screwdriver must have "loosened" its' innards because this morning the needle turned freely without any problem.
However, the stitch selection dials are partially frozen up. One moves only a little, the other not at all.
As I have used this machine, and it's twin, which I own as well, I know I am moving or attempting to move the dials correctly. And although it was "serviced" just last year, I am not confident it got more than a simple dusting and cleaning. It does stitch a nice clean straight stitch.
I've bookmarked the video posted - thanks so much! It looks helpful from the first part I viewed but I have to get on to something else for a bit, then I'll come back to it.
I have found a home for this machine with a friend who will treasure it and I hope to get it in tip top condition before I hand it over.
I would like to know where I can buy a new bakelite fitting for the end of the power cord as well as the mating piece for the side of the machine. Are these still available? This one is cracked and does not always connect cleanly. If you know of any sources, please let me know.
I do know that this machine will be given a thorough cleaning of it's innards too - long overdue!
Thanks again, to all!
GEMRM