With a bit of help, I was able to determine that the cause of the extra spacing on hover with the newer Slider Revolution version was due to the following in the AppDev theme style.css:

.widget ul li:hover { padding-left: 22px; }

This is because the Slider Revolution resides in a widget on the single page. Once I added a custom style to override the left padding to set it to 0, the slider no longer shifts over on hover. The curious thing is why the left padding didn’t trigger on hover on the older Slider Revolution included with the AppDev theme.

Anyways, both my glitches resolved and hopefully this info will help others.

Frank