JFP, I wasn't surprised to see cam chain wear pads on your list. I had just watched Jake Raby explain why replacing them is necessary, and he showed exactly how to do it:
https://www.youtube.com/watch?v=ocntYwozZBY
I hadn't counted on having to do something quite so invasive to this new engine. However, excessive camshaft deviation due to worn wear pads is mega-undesirable, and the new, improved material they're using in modern wear pads sounds like the answer. The procedure requires special tools, to hold the cams in place, etc. Where do you suggest I obtain them?