There is so much junk on the roof of our S520 the 2 solar panels which are very old are only 500mm wide. Would like to replace both of them and instaed of 500 by 1000 I would like up to 1500mm . Cannot go wider but finding a source is hard even trawling Chinese sites is fruitless. I see 140 watt 500 by 1480 are advertised in Australia. Anyone out there sourced 500mm panels? The longer the better