After some extremely tedious work (had to use right angle wrench to remove the nut holding the screw to the motor component), finally got the auger taken apart and cleaned/sanded. It definitely was jammed with wood pellets to a point the auger would not even turn. Even though it always is covered when not in use, believe the humidity helped jam it up. We have had an inordinate amount of rain this spring and summer.
Now I have another issue...since reassembling the heat remains on, even it is only around 140 degrees. Did I do something wrong reassembling it? Is there a sensor that is creating the problem? I finally just pulled the plug today when I realized heat was still present. If that is what I have to do each time, then that is what I will do.