We are trying to put DD's big girl bed together... we got two of the extra long bed rails (one for each side) but on the twin bed it seems like we can't put one on each side because the bars that go under the mattress will be on top of each other and not lay right... has anyone else had this problem?? Any ways to solve it? I see online they have double bed rails, but those arent extra long... any help or advice would be appreciated!