Additional info, as I have nearly got it to scale right.
So to Confirm.
height-map 4033x4033 TGA
texture map 4096x4096
I did try heightmap at 4096x4096 too but this not help. Totally stuck now and I know its just a little thing I am missing, so will be grateful for any help.
UPDATE
Strange but the mapping rotation parameter is HAVING an effect now so I am getting closer, Mapping pan U & V have no imapact regardless of the values I use?