Your defining mission creep, boost!
I have no plan to change the cam - I enjoy the smooth idle and clean exhaust.
The other parts...I've considered.
Well, down to the last cylinder for the spring change and ended up with this image...what is missing?
Fortunately, I had eyes on when it flipped off the retainer...fell externally to the engine into the bowels of the engine compartment. So waiting for a replacement...bought 2 weeks of downtime. It was newbie mistake...not employing any catch rags.