OK I really do think I got it fixed this time... Before the light module was actually making a clunk sound when I shook it lightly, that was almost surely the problem. So I finally found a 0.5mm mechanical pencil with a metal sleeve in the point and stuck it in that miniscule dimple and I got it nice and snug now. (I feel like such a craftsman now 
) And now I'm walking around with the light and shaking it and bumping it and it really does seem to be fixed... I sure do hope that's all it was because I really like this light.
Good.....you have to remember and make it a habbit to check them......just like a real car the lights need to be taken care of too...lol.
I guess so... I really think that was it. It seems to be standing up to my gentle torture test. Thanks for the tips Al. Here comes my detailed review in about ten minutes...
Cool, cant wait.