I am the guy who bought Como Dave's President 41'. After the tanks failed I determined that corrosion ate through the bottoms. Poor design that traps moisture/condensation under the tanks. They have no access panels in them to get inside and repair. At least mine didn't. So my only option was to R&R. As luck would have it I found a guy in Kingston Ontario who has done this repair twice now on Presidents. He has a lift to pull one engine at a time to gain access to the tanks. He has CAD models of the tanks that go back in albeit they have less capacity to get them through the door. I had him add huge access panels so in the future this problem can be better managed. As well as just being able to clean the tanks in the future. He can fabricate the tanks for you in aluminum plate. I do not know if he can do this R&R though because he was close to retiring and it took him a very LONG time to finish our job. Many months. On the positive side the work was good and the price was half what anyone else quoted us. The guy's name is Tom Wroe, the company is Metalcraft Marine on Wolffe Island Ontario. 613-536-8224. If you want to discuss I can be reached at: 920-420-3273 or by E-mail:
dave@davinciec.com. Good luck. Hope this helps.
