when editing stuff in ge, you probably used the outdoor Camera to move around, which completely messed it up. Open the mod again, find the outdoor camera, click on it and put everything on 0 0 0 (translation, rotation, scale). Only thing that needs to be changed from there on is the translation on the Z axis. You can do 9, 10,11 or else, depending on the size of the machine. If that doesn't help, check if the camera somehow didn't end inside the wheels transform group, or if the camera's node in the xml is correct / wheels node is correct.