Update: Photoic universe have been very honest and confirmed that a batch of the semiflex (black reinforced) panels had a issue with a change in glue bonding the laminates but only a small batch and this has been rectified. Shouldn't have happened but they did not know the German manufacturer changed it. They also confirmed that the top layer could be removed and its purpose was to protect the cells from tree damage etc... Going to leave top layer on at moment until it worsens.