The marker and class lights are the same LED's on both PS2 and PS3 engines. These LED's have dome shaped diffuse lenses. The lantern itself is hollow and is not fitted with any additional lenses. When the LED's are recessed inside the lantern the colored light is emitted both to the front and out the side, just as in the photo posted by kjstrains. The LED on your engine has poked forward out the front opening in the lantern and needs to be pushed back inside. Your engine isn't missing anything. Nothing has changed between different production runs. This is simply a tiny manufacturing defect that can be corrected as I described above.