Okay, so I got it finally up and running, my cat moustache antenna! First I build a decent 1:1 balun with an 4C65 core. I did want to attach more then one set of wires on a single feeding point. I did it with a piece of drainage pipe and some nuts and bolts. Insert the balun from under and ready! The wires where the right length in the first run. Only the 40m wires I had to shorten a little.

40m, 20m and 10m wires a nice harmonic within the middle of each band, swr is okay even without tuner. I’m a happy camper!