hey! here are a couple of pictures. As i researched this problem, I saw one post that suggested creating a repeater: mirror and THEN sliding the group into it. this does get better results, but as you can see, it is offset from the world symmetry. Im having a heckuva time figuring out how to make this work!
When adding the mirror node, select an object (such as the body in this case) that you want the mirror node to be centred upon. Then select On Gizmo at the top of the menu when you’re adding your mirror node. This places the mirror node centred to the body, allowing your legs to be mirrored & centred.
you are a wizard! Thanks Bezzo 
I certainly appreciate it!