Mission Builder Engine Thrust Node

[XLjedi]

I'd like to create a mission where the player has to build a craft...  One required part will be a rocket booster.

All good so far...

I need to limit the rocket booster thrust to 50% for the mission.   Is there a node or setting that will let me do this?

As an alternative, I could also possibly start with a craft that has the part that I want to use, with the exact settings that I want.  ...and maybe the player has to modify it?  But in this scenario, they would not be allowed to delete or edit the starting parts, only add to them.

Any ideas?

Edited October 13, 2018 by XLjedi