I've been looking at of the STS-94 skylab launch and other launching involving asymmetrical rocket launch vehicles, mostly because I've never been able to design something similar in KSP with perfectly balanced thrust for an asymmetrical rocket. How did they balance the thrust for the first and second stages?
In this picture of the STS-94 it seems as if the shuttle thrusters are firing to maintain the center of thrust, is this the case? How much fuel did the shuttle expend to maintain thrust balance? How would/could they have built the rocket to not require the firing of the shuttle engines in this asymmetrical design?