yes if you ordered the fsa headset of the internet or went to a bike shop yo should have got a crownrace that is bigger and skinnier than the stock crown race so put that on your fork and hammer that down ALL THE WAY
get a flathead and use that to hammer the old one off. then just find a way to put the new one on ALL the way. most people get a pipe a bit bigger than the fork and hit that on the crown race to get it all the way down.