replacing lokbox fin box

i went surfing yesterday and after i came out of the water i noticed the box on the right had a small crack along where the box meets the foam and it goes almost around the whole thing, before i lose the box along with the fin from surfing, i was wondering which would be the best way to go about fixing it? should i just rerout the thing put a new one in? or is there another way

thanks

Check to see if the box seems like it wiggling or broken loose from the surrounding foam. If not you be ok with just sandind it with some 60 grit and re-capping it with a new piece of glass. If you have to re-rout it you send me a PM. Thanks Jim