Ok, first of all you should move the nose a bit further back, since there's a huge gaping hole in the side. Second of all, try to fine-tune the placement of the light in the config. Should be there somewhere. Just move it forward some and call it a day once you've got the measurements figured out.
The original nose of the engine was the standard 88 inch nose on most EMD engines, so a bit further back. The new nose (presumably 123 inches) needs the light to be a bit further forward.