Re: Prepping to re-bed stanchions.
A cordless Dremel with a little cutter bit (#115) to clear out a few millimeters of core all around inside each hole before filling with thickened epoxy has worked well for me. And if it's wet in there and has soaked into the wood, I wouldn't count on significant drying taking place really.
2000 Beneteau 331
Northern Chesapeake Bay
Ambition is a poor excuse for not having enough sense to be lazy ~ Steven Wright