Can anyone post a picture of this light with the head/LED removed. I have tried a heat gun to warm it up and twist off with no luck. I am not even sure where the two parts join and I have looked closely with a magnifying glass to try and find a seam where they meet. any tips on removal? anyone know where to get a replacement head that will fit onto the main tube. I found this one at work but the LED doesn't light up with new batteries. I figured I would use it to attempt a modification.