Custom FP gearpuller.
Get a battery terminal puller: something approximately like this (we use a slightly different one)...
http://mlautomotiveonline.com/OTC-To...-P1325948.aspx
Carefully drill a 1/2" deep hole in the center of the threaded shaft slightly narrower than the FP shaft size. A lathe is a good choice for centering.
Epoxy glue a piece of a hardened drill bit into the hole. (the non cutting shaft of the drill bit facing the gear)
Works like a champ for us.
Always wear safety glasses.