Thanks for the information. Glad to hear that, for the most part, what I am seeing is normal.
The jumpiness in the image is constant, like a jitter. It is not bad, but I notice it and wonder if it is normal, too. I realize that this a an old scope, but IMO one of the best, and certainly the best I have even owned... If I only had a crane to pick it up. ;) I am going to trade out the scope plugins for a 7L13 analyzer plugin and see if it is jittery too.
Again, thanks for your input!