I'm in the process of possibly buying a set of Eltax Liberty speakers (Liberty 5.0), however the floorstanders mids have had the centre of the cones pushed in, as has one of the mid cones on the centre!!. Although sonically the APPEAR ok I'm not sure. Is there any way of simply getting the cones back out (vacumn??, pushing them out from behind??) or is it a case of once they're in they're in and walking away from the deal??