I think the long term fix would be to remove all the paint down to the barrier coat and redux, but as stated you really don't want to do that. As said sanding the edges and applying the paint to that areas should do unless you're a racer.
Did the OP use the same color paint for the hard paint as they did the ablative? Just curious, usually its best practice to use different colors between paint as I did here:
Barrier coat in gray followed by black bottom paint:
Two coats (3 on rudder & keel) of black bottom paint followed by one (2 on rudder & keel) coat of blue bottom paint: