[Review] DQG Tiny26650 (Triple CREE XP-G2 R5 CW, 1x 26650)

I just got one from Mt. Electronics.

http://www.mtnelectronics.com/opencart/index.php?route=product/product&path=80&product_id=368

Hi,
I have 2 dqg tiny 26650 sent from a friend for serach and resolve issues.
The first had never turn on
The second one have a strage issue: if I turn on the light and unless I go through the levels the light works properly but if I stuck on a level after few seconda the light goes to the low level.
The seller after get the second one for replecement of the first one doesn’t want to know anithing.
Can someone help me to find how fix the lights or to find a better driver to put in? (If I realize to open it :D)

cool review!