I am having Jamo S 506 5.1 setup. I am keeping the Warfadale close to the wall to reduce the boomy effect since the room is small and having no sound proofing.
Since the WF are back-ported, keeping them close to the wall will increase the bass output and boominess, not reduce it. You should keep them further away from the walls than currently set up. They need the breathing space...
Since the room is small, i was getting the boomy effect. I tried moving aournd the speaker and found close to the wall is the best position. It may change after burn-in becouse the speaker sounds better now than when it was new.