If you've done everthing right you don't need a Lee FCD.

Seat and crimp in two seperate steps and if you are getting too much crimp, adjust your dies so it doesn't do it as much.

On a single stage press I use the seat/crimp die to do both steps seperately. On a progressive I usually use a standard Lee seat/crimp die to perform the crimp operation after the bullet was seated in a previous step.