I'M THINKING ABOUT BUYING A 2520 DVSC I/O WITH A 350CI VOLVO DUOPROP. THE HULL IS A 95 BUT ENGINE IS NEW IN 06. COULD ANYONE OFFER THEIR ADVICE ON WHAT TO LOOK FOR IN ANY COMMON CONCERNS THAT MAY INFLUENCE MY PURCHASE? I PLAN ON FISHING BOSTON HARBOR AND MASS BAY WITH OCCASIONAL OFFSHORE TRIPS...