Thanks so much Andrii!
Just a couple of things are not quite resolved:
1. “In the page editor, the visual composer is useless as I can’t scroll down to save my changes” – This is only the case for some of the elements with larger edit boxes. For example Google maps: http://monosnap.com/image/EmA912rzvDeSPdh5J9BRu5knCsSShn
5. “In the Theme Options “Styles:Header > Primary menu – submenu background” changes the submenu text colour NOT the background” – this setting now applies to both the submenu text colour AND the background. Shouldn’t there be a separate setting for the text colour?