From the Leo Turrini blog:
"The first aerodynamic package of the SF1000 does not work. So far the problems of 2019 have not been solved. The car suffers from understeer and the performance on the dry lap are still far away from the Mercedes (and Red Bull) levels."
Turrini, a Ferrari insider, had reported a few weeks ago that the SF1000 had not achieved the expected results in the wind tunnel.
Krasota