As of KSP 1.2, gimbal transform need to be aligned with thrust transforms (i.e. +Z in direction of thrust). Looks like the LR91 is currently set up so the gimbal is aligned according to the part root transform, which makes the engine only gimbal in one direction. Sadly that makes it unuseable in groups of less than 3...
As of KSP 1.2, gimbal transform need to be aligned with thrust transforms (i.e. +Z in direction of thrust). Looks like the LR91 is currently set up so the gimbal is aligned according to the part root transform, which makes the engine only gimbal in one direction. Sadly that makes it unuseable in groups of less than 3...