Unfortunately, none of the GUI solutions have worked on my 2017 mac, but as per GZK8000’s suggestion, I googled “Unrar” for command line (Terminal) and got the following two links that will walk you through it:

To get and install UNRAR:
http://best-mac-tips.com/2013/02/01/install-free-command-line-unrar-mac/

To unwrap the RAR files after installing UNRAR:
http://best-mac-tips.com/2013/02/02/extract-rar-archive-command-line-mac-terminal/

Meanwhile, this is beautiful! The reds are pretty intense (as was alluded to earlier in the thread), but it does kind of help Leia look healthier while visiting Luke in the sick bay.

The opening crawl looks a little soft to me. Is that just what it looks like? …And there is obviously some flicker.

Beyond that, what kind of things should I be looking for in order to actually be helpful in this process?