Rocketman
Enlightened
Doesn't sound like an isolated case. Sounds like a POS to me.
Sounds to me like some manufacturing difficulties. Some are good, some are bad. For a light that turns on and off and mode switches using the head, I reckon the head should be sufficiently tight.
I'll stay clear of the mini 123 for now I suppose. Was actually looking at the Fenix and the Quark single cell lights for a key chain or pocket light. These threads are very valuable IMO. A bad light costs more than it's price tag. BTW I recommend return to the dealer if possible.