ORIGINAL: nc1776

I want to remove the nose washer from a O.S. FF-320 engine to put a onboard starter gear on it. I have never taken the prop washer off of one. Does anyone know what is the best way to remove one. I tried very lightly with a brass drift but it did not make any sign of moving so I went no further. I also tried a wooden dowl with no luck. I do not want to hurt the engine so figure its best to ask first.