@Mustang I just checked the model and the configurations, and the correct thrust centerline distance should be 6.8ft, whereas it's currently 6.0ft. It's not a holdover from the piston engines, which have the same centerlines, so I'm not sure where that came from. I've fixed it for the next version, but I suspect the change in performance will be pretty minimal. You're welcome to test it yourself. Look for the Engine.0, and Engine.1 lines near the top of the engines.cfg, and replace them with the following lines:
Engine.0 = 6.9, -6.8, 0.7
Engine.1 = 6.9, 6.8, 0.7