I have a 1989 3807 with std. saddle tanks and 400 Crusaders. Port side has developed a slow-leak contained in the cradle and requires repair or replacement. Boat is moored in Portage Bay / Seattle and I am looking for anyone with gas tank experience in the aft cabin Carvers. Best source for replacement tanks? Engine removal looks like it is needed? Suggestions or repair options? Thanks, Ks.