Pyrocluster

Shifting a few meters did solve that problem. I'll try the other solutions later.... Thanks a lot!

If I use two or more Rockomax BACC Solid Fuel Booster radial with the same reduced thrust limiter setting on all Boosters why does my rocket liftoff in Sandbox and Science Mode but not in Career Mode (same layout and TWR 1.25)? The same procedure above works good with other engines (not all tested) in all three game modes. I realised it on the TWR display from Kerbal Engineer Redux because I want a smooth Launch. I did a clean fresh install of KSP without any mod and the problem is still there.