Give us a screenshot of the build grid please. A few things that need to be checked. And
Map view when passing one of the following marks (this one is absolutely essential). Target speed is at calculated for the following orbit heights by Altaïr :
11.360.000 km: 7250 m/s, the historical Mars level, useful for those playing with older versions.
15.000.000 km: 6311 m/s, slightly above Mars level.
40.000.000 km: 3868 m/s , slightly past Jupiter's level.
100.000.000 km: 2447 m/s: last chance if you missed all the previous marks.
In all cases, don't worry about being EXACTLY being at the mark. And if you're well past the mark but still over the threshold speed, it's ok.
For Steam players: as an alternative if you play with the VanillaUpgrades mod, you can show that your trajectory in the solar system has an eccentricity strictly above 1.0 instead of the screenshot at mark.
For Steam players: as an alternative if you play with the VanillaUpgrades mod, you can show that your trajectory in the solar system has an eccentricity strictly above 1.0 instead of the screenshot at mark.