Where did the Petzl Tactikka Threads Go?

[John_Galt]

I've tried the search function but no luck. Where oh where did the threads for modding the Petzl Tactikka XP go? They used to be on the second page of the Headlamps sub-forum, but now I can't locate them. I am interested in replacing the older LED in one for a newer neutral/warm LED, for replacing my aging Princeton tec Aurora. I had seen a thread with a pictoral collage of diassembling the XP, and how to replace the LED. Any help would be greatly appreciated... Thanks in advance.