Thanks so much for all of the help! I didn't find any blockage in the fan chamber or the bag. I did install a new bag again and just like before, the motor still slows while running the vacuuum at times and then speeds back up again. I will say, between my help and how my neighbor takes care of her things, this vacuum has always had regular belt and bag changes performed on it.
I will try and pick up a top bearing for the motor and I appreciate all of the help on how to install a new one. Is there a part number anyone has that I should take with me to the vacuum shop?
Thanks again for all of the help you people have given to me! I will try and tackle this job tomorrow .