If you want to do an emitter swap, you might as well contact Vinh or someone similar.
If you just want to see about getting it to work properly, You could do as warmcopper mentioned or you can go to the HDS thread and ask or contact Hogo via pm. He now works for HDS and is tight with Henry. He could definitely get you an answer from the HDS side. bad thing is HDS are working on some changes to get turn around times better, so if you send your light in to HDS, it may or may not take a good bit of time, IDK.
Either way HOGO is the best contact IF you want to get in touch with HDS