[Flojo]

Pezza, thanks for the hint to "mirror finish" the surface where the seal is gonna sit on.
Honestly, I was aware of that, as it was obvious to me that the surface must be as clean/even as most possible can be.
So I did clean it, believing it was best I could.

But as I (stil) have that on-drop-leak on both sides, I'm now really believing that this must be reasoned in a leaking rocker shaft seal.

I will re-attend that, when the next service interval is sceduled by end of october.
So right now I have my cloth and the brake-cleaner at hand for the clean up ritual after every drive...