I am looking at buying a '83 early model J22 that is in overall ok shape (normal issues for age). The one part that concerns me is the large crack appearing around the mast step and the exposed fg. There are no soft spots apparent and the owner says the cracks had not been increasing, but how concerned should I be? Should this be a pretty evasive repair or just possibly open the gap, epoxy, gelcoat. Thanks for any thoughts you may have!