So I tried using the Invert Filter which worked but then noticed all the maps were inverted. I solved it by adding a duplicate without the invert filter and just used it for Norm and Rough, whilst the original for Colour only.
But I must say I am a little peeved with the lack of response for my qs lately. That is what these forums are for aren't they or should I bombard CS with direct emails?
I like Daz3D's approach to forums with having people who know their product helping out. They are called Community Volunteers and I used to be one many years ago, before I got too busy.
Yes a lot of SP can be learnt from online Tutorials but after watching many I find I am still lacking understanding of certain aspects hence me asking here, for what is worth. But I am starting to get the hang of SP and having years of Photoshop experience I find the layers system to be a perfect fit. I really can't moan about the software though.
Just wish we had a Colour Swatch saver and be able to copy and paste Filters from one layer to another.