Kriiis crafted mine. Echandra and Carlyn have also done synthing for me in the past.
If you use FFXIAH at all, you can go to "Power Search" under where you search for a player. You can then input the crafting levels you need, and get a list of people to ask. Anytime I've done this, I've had good results. Usually just a "Hi, I saw you have XXX craft on FFXIAH. Could you do a synth for me?" has gotten a response.