Thanks for the info!
I had an outdoor day with a happy end. I was consistently three tenths faster than the last time. The track had a similar grip level. All my ideas worked in the beginning. Then I worked in the wrong direction for a few runs, but found the way back on the right track.
Today I could attack harder into the corner and had a little more rotation. For the last run I found something that brought more traction for the front end, made the car faster and nicer to drive. It felt really good to hear the time announcing voice to start with 16 every lap. My fastest laptime is now 16.495s With ten and more laps in the 16.6s and even after nearly 15 minutes I could stay below 17s. That was a solid step forward and made me very happy
With that good feeling I will rebuild and check the car next week and hope to deliver a good performance next weekend in Erlangen.