Hi Tazz,
Downloaded your file, ungrouped the menu and bar menu, changed the web site to 'clip to page edges' and published.
I have no problems on my iPhone or Desktop but on the Android phone I get the desktop site.
I have no issue with the text content running over the right-hand side of the browser window
For a site of this size I wouldn't use a supersite, far much to download at one time, especially on mobile. The animated gif is an horrendous size. Also your mobile menu doesn't close when a button is clicked.
You can view my results:
HERE
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