It's just one bit in the long coding for the cluster to enable Nav.Fixed it!!
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That’s the full European bundle for it, the 15GB download (or however big it is). Don’t know what I did tbh, still used my Mac but formatted it using an old Windows machine, lying around.
Just need to figure out the coding/adaptations for getting the nav details onto the MFD and I think that’s all of it! (Oh, and my Dynaudio settings but Simaservis is on that.)