OK, I'm getting it now, the VC collimation has the top of it cut off leading me to believe it was the default and not csWeapons HUD thus I was stuck with the 2D display.

I carried out the calibrations and still have the collimation 'decapitated' eg.
ctrl+shift+9 or 0 and also the xml file changes to give me test pattern.
<Collimate>1</Collimate>
<!-- VC HUD collimation. 1-yes, 0-no (1). -->
<TestFrame>0</TestFrame>
<!-- HUD test pattern. 1-yes, 0-no (0). -->

Looks like I've have to adjust the XYZ co-ordinates.

Thank you for your tollerance.