well two of my screens are now on their way to mr Raines for testing.
I have also purchased 2 other screens and they act exactly the same 
they are..
http://www.ebay.co.uk/itm/160633652459?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649#ht_3834wt_957
http://www.ebay.co.uk/itm/190345879489?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649#ht_3812wt_906