I just purchased a 1983 E28+. First boat. The interior cushions are quite worn down and should be replaced. Any suggestions? Is there somewhere I can find the exact dimensions of the cushions, which I assume would make it easier to order new ones? Any advice as to how to go about replacing the cushions (from both a quality and value standpoint)? How about cockpit cushions? The boat does not have any, but any suggestions on how to best go about obtaining them would be appreciated. Thanks!