I recently purchased a Gerber (formerly CMG) Infinity and for the last week or two I've been carrying it in my pocket. The few times I've tried to use it, sometimes the light doesn't engage right away. The tail cap is screwed all the way down, but it seems I have to shake it a couple of times for it to work. I had such high hopes for this light, and so far I'm rather disappointed.

Anyone else have similar problems? Ideas to remedy it?

Thanks