I think I should had made an education as a mechanic after all.

After noticing some oil on the oilfilter I thought, yay another project. Finally an oil leak.

but after removing some parts

ok some more parts and even more I ended up here and think this was the issue

so I used up my WD-40 and cleaned it all to make it look pretty again.

sorry no pictures of this. But let's see how the bike behaves for the next couple of thousand miles till we get it a companion for the cold winter months and to have the girl more comfortable.