I have an old 5 D cell maglite my uncle have me before he passed away. The plastic piece under the bulb holder cracked and broke a few days ago, I believe it's part of the switch mechanism. I can't get the mechanism out of the flashlight and I haven't found much info on how to do it. The serial no. Is 50020760 and it says patent pending on the other side if that helps. This light has a lot of sentimental value so if anyone can help me repair it I would greatly appreciate it.