I am a new owner of a re-born O'Day 25. However, there are some leaks which need to be corrected. The major leak is from one of the teak toe rails on the starbord side. Questions: 1)are the rails attached by screws or bolts, 2)If screws, should one seal the opening by filling the previous screw hole with caulk and insering the new screw, 3) if bolts, the bolts seem to terminate in the void between the liner (?)and the hull since they cannot be seen below decks. Suggestions from anyone with information on this issue would be most welcome..JP