3ds Max :: Symmetry With Bones Using Skin Modifier

I have recently starting skinning my human model and everything was fine until I found out that the chest bone I have on each side of the chest isn't being noticed by 3ds Max as being symmetrical with the other bone. This means I can't use mirror bones or mirror vertices to that part of the model. How to make two bones that aren't being recognized as symmetrical by 3ds Max symmetrical? When using the envelopes in the skin modifier, when I go to mirror the bones or vertices, the two bones are red instead of blue or green to show symmetry. The two bones are relatively in the same place on opposite sides of the model. They aren't the same size but close. Is there something I need to do to make them have symmetry or is there a way to make 3ds Max recognize that you have two bones that you want to be symmetrical?