Introducing myself. I bought a 1983 Catalina 30 in May of 2008. She is in fair to good condition with most systems working well. We sail out of Rock Hall, MD on week ends. I need advice on tuning up my stays and shrouds and my battery charger doesn't charge the batteries when I plug in shore power so I need ideas about how to determine if I need a new charger or, is it a wiring problem? We have 5 twenty something kids that love to sail and we usually have a few on board when we head out. I'm sure that having a boat this old will challenge my maintenance know how so I'll need all the help I can get.