Great... I'm stuck with a pair of made in China Sea&Sea strobes...     Back to the original question. Point in fact I never got a white LED to work with the YS-D2. In fact I tests a range of different color LEDs settling on red. While I only had Sea&Sea fibers to work with one fiber simply put transmitted far less light, where I couldn't get reliable operation. If I had known at the time I purchased it, it was have gone back for a replacement. That said so much light is coming out of
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