9 minutes ago, Sam.MP4 said:
Is finger tight a good length?
Finger tight is always a good rule of thumb if you are unsure, as long as you can actually screw it in enough for the screw to do its job.
Looking at a pic of your case, it looks like the panel is held on by 4 thumb screws in the corners. If that is the case, finger tight is the way to go.