:: Plug the hole with some dowel stock, use some 5min epoxy :: to make sure it doesn't move. Also make it flush with :: the transom. Now you can redrill the hole off-set to the :: larger size. :: :: :: My stern drain holes are leaking around the rubber :: :: stoppers and I want to correct this by boring bigger :: :: holes and putting in a about a 1/2" pvc pipe with plug :: :: in each hole. Problem: the existing holes are about :: :: 1/8th inch from the bottom of the transom. Suggestions?