Yes the answer is to make the OBJ double sided. However I tried this using Maz's free utility and that produced weird results. I tried again using 3DExplorer and that was less than satisfactory. I then tried using an option found in the soon to be released Pro version of a UV mapping utility, (the name of which you will understand I can not mention at this time). That worked a charm :)
So if you are also not successful with the utilities you find then please by all means email me and I'll run it through mine.
A simple solution? No just elementary :)
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