Welcome aboard Eshore,
Down the road, feel free to start a new thread to ask for assistance. Makes the thread easier to find using search and keeps the topic focused.
Anyway, scupper replacement is a common task here. here are a couple links:
http://www.classicseacraft.com/commu...scupper+repair

http://www.classicseacraft.com/commu...scupper+repair

good luck.