Mine are in the lower hole on the hanger. I don't have any issue with instability because of it.
Now with said I realize your camper is a lot bigger then mine, but, if CR didn't want those holes to be used, they probably wouldn't have used that hanger.
It's a simple enough procedure to perform (changing holes) that if it was mine, I would just go ahead and do it. If you aren't satisfied with the results it can be changed back. It's not like it would be a permanent thing if it didn't work for you.
Here is a link to info you were wondering about.