If I understood what you're asking I think you need to use duplicate special for this, with negative scaling on one of the axis(see 'duplicate special' 's options in edit menu, under 'duplicate').
if that's not what you're looking for post a pic so we'll see what you mean.
Benny
When in doubt, delete history and freeze transformations.
My latest snake game
(Requires DirectX9 SDK and Framework)