Thanks you guys, including old faithful, Blou Bliksem.

Namibia is an entire destination, journey and experience all on its own. You've laid it out here for us to share in the beauty and to glimpse at your experiences. Not everybody has this opportunity. This may be the closest that some get to that experience.
You were very lucky to see Epupa falls in flood, it was spectacular!
The roads were also tough in places and you handled it masterfully.
I'm a bit disillusioned about the Heidies. I've done about 5 on mine now. I looked for signs of delamination of sorts like yours but none. The TKC's are better but don't last very long as you mentioned.
Thanks for sharing