Havent posted here in forever. Got a basics question. My Jetbeam Mini-1 usb keychain light won't turn OFF. Last weekend, I used it and when i unscrewed to turn it off, it wouldnt turn off. I kept unscrewing until the cap came off. Whenever i try to screw it back on the light goes on and wont turn off...have you guys heard this one before? Is this just 'get a new light?' answer?