Hi John, You can do nothing and they will work it out, or you can do everything(within captive limits) and it will not work.
If you ask me if I have ackies, I will answer, yes, I am working with ackies. That means, I work ackies, I have constantly do something to achieve desired results. If I do not work them properly, they will show poor results. If I work them properly, they reveal better or benefitual results. Now consider, I am the same person with the same knowledge, its all about keeping up the effort(to work)
Couple that with each animal is an individual and your WORK is cut out for you.
I normally let them work it out. Once in a while I have to intefere. Only you will know when to interfere.
It seems you already have ideas of things to try, try them or not, the point is, they may or may not work.
As long as you included normal support, monitors do not give a hoot about being moved to new cages or having their cage rearranged. In fact, they seem to love it.
The longer I keep monitors, the more it becomes apparent, monitors are not for everyone. Its possible you are not meant for monitors. They are behavioral and do lots of things, some are cool, some are, hmmmmmmmmm not so cool. But that is what are.
Good luck Cheers