I am sorry for so many posts but I am thinking out loud. Can you have two events in a single element? Is that why they are acting bond together? One class trying to control the spacing on two items. Wish I was smarter.
Idea, Since you are a plugin developer of excellent reputation maybe you could email the guy who will not answer me, maybe he will answer you since it benefits you both for theme and plugin to work. email@example.com John