mx... seems like we are on the same page

I did not convert your metric units of clearance to what I measure in..... thousandths. I do know that every 0.1mm is .004", so your .55mm (0.022") is a bit lower than I shoot for on my standard set-up of 0.028". My 0.028" standard falls right in the middle of your band at 0.70mm. In FL I may add 0.1mm shim and occasionally I may remove one.

We are very close on .12 engines as well. Again, I fall right in the middle of your band at 0.022"- 0.024" (about 0.6mm) on my starting point.

I agree with all your other tuning points on humidity and temps as well. Usually there is one over-riding factor that makes the determination on how to best tune the engine at a given set of conditions. The determining factor could be different with each new set of variables, but good to see someone who is on the same page.