perfect, thanks. I have about 930 km already and engine is running better and better. I already went bit lower with the mixture and oil and seems to be Ok. Now just have to have small rest, as the spokes in the rear wheel are braking. Pavel Simek told me he is using stainless steel once and are Ok, maybe I made it too stiff. But already waiting for the normal steel and this should be Ok.
Thanks, all the best,