Ah I see the light, I knew the Longitude/Latitude were, but completely ignored the left values & it is these that appear in the LND file & the right values in the cfg file.

I didn't know about the Locations folder with the tga's & that is a big help I think I will print these out to a little booklet for quick reference!

I will try starting from the "new base" then, as a test.
Many thanks.