After thinking about it, I think you are just flooding the non filled areas between your hull, stringers and the plastic bilge liner. Yes, the tank areas are there outside the stringers, but they are not sealed, so water passes between the two sides of the hull. That is bad. You can't get all the water out. You do not have the sealed tanks that the SX boats have. It makes total sense that Toyota didn't make their people lay up with fiberglass, by hand, tanks on non SX boats. I'd never say never, but they made 44 SX's. That's not a lot of serial numbers to get confused, if you look at the sequence they left the factory, you can tell that they were out of order, not mass produced. They are each hand built. All epics are like that, not much chance for the wrong equipment but lots of variation as line changes were made. I notice huge differences in the way my "00 vs my "01 are put together. Both are super nice, built like a brick, but different routings under the dash, etc.
If it were me, and I had an S22, I would drill a hole in the storage compartment and put an air fitting on it. If I could put 10 PSI on it, and it would not leak down (much:) after a period of time (1 minute) I would consider the fact that I might have tanks
I notice that some boats are specd out as SX's and others areSX22's what's up with that?
Capt Rick, whaddya think? You must know more than anyone about what they were doing at that time. Hook us up before someone messes up their boat.