i dont think it matters really what side they are put on...but as you see the slotted direction the evo rotors are going are backwards which tells me you put the wrong side rotor on there.
your stock set-up is correct...
when i did mine the rotors where labled R&L
http://i19.photobucket.com/albums/b1..._3181848_n.jpg
:P i did the same mistake you did and had to change them :)