Wonderful stuff!
Gil, is the second shot "Sheba's Breasts" in the Drakensberg?

No, those are in Eswatini. These are the Inner Horn and Outer Horn, seen just to the left of Cathedral Peak. The sun is peeking through to the right of Cleft Peak on the Lesotho border -- it's actually higher than Cathedral.

Hi Michael.
As a landscape, wildlife and product photographer with an obsession with image sharpness and detil ssince I often print large, I currently shoot my macro and product work with the IRIX 150 f/2.8 Macro lens (Z mount). While it is quite sharp, I've lately heard positive things about the stellar sharpness of the Voigtlander 65 f/2.8 APO-LANTAR Macro lens for Nikon Z mount. So, I see you rate the Voigtlander as being sharper than the Nikkor MC 105 Z lens. Do you also think that it is sharper than the IRIX 150 f/2.8 Macro? Thank you very much! Happy Holidays,
Steve
P.S. - For reference, I attached a Focus Stack Macro using that Z8 and IRIX 150 f/2.8 Macro.

The very south of Europe and North Africa, one of my favourite places.

  D5, 28mm 1.4e

Yes looks like I need to add a ring without adding friction.  Need it to be a bit thinner than the existing petal ring in order for the hood/cap male threads to clear whatever ring I may add.  Unfortunately, the press fit is too good (too tight) so won't try to remove the ring on the lens although I would have liked it be a millimeter or two higher.  Thanks for the warnings.  From a quick test with a shim, it was clear there is no room between the lens hood and the felt seal.  I do have the petals on enough of a ring that I could cut a ring from that. 

For the auto focus to work the fit must be frictionless or close to. Otherwise there will be strain on the gears that are not meant to bee.
There is no space for anything between the felt seal and the lens hood tube.
Also the front element group will bee loose to rattle around.

Yes you have raised a warning.