Back of Hair not rendering properly

I am using DAZ models.
This hair is Beach Hair.
As you can see in Game, two sections of the rear morph are not rendering in game properly:
Back hair view in game - 2 gaps.PNG

In persona, this skeletal mesh looks fine:

And here is how it is set up as a texture.
(I had used an opacity mask to give fringes to the end of the hair - but set it to opaque to troubleshoot - it made no difference)

Any ideas?

What happens if you set it to the default shading model and turn off Two Sided?

I’ll try that and let you know. Thanks for the suggestion. - probably be 22 Oct 16 before I can try.