RACE-FACTOR at the Fusselflitzer in Duisburg.
With my RF28v4. 1 I was able to set the 3rd fastest time on the new layout right away. My RFv4. 1 was really good, tended not to tip over and was very precise to drive.
That makes me want more, when I drive the track for the second time, I will test a few more setups. I think there's more.