harmonic balancer

Hi,people
I was just now going to put togheter the slant six in my Duster when I ran into a problem with the harmonic balancer.I dont know if im missing a part or if someone pulled it off wrong but the pulley seems to not fit the part that goes on the crank.Is this balancer ruined?Am i going to need a new one or will one from a 318 fit it.If anone has a spare harmonic balancer,or if mine can be repaired let me know.thanks!!