Voyage 500 Leaking Water Tanks

[TGT]

Hi - We have a 2000 Voyage 500 Mayotte Cat. 3 of the 4 stainless steel water tanks are leaking. We have checked all of the the connector hoses, but the leaks seam to be coming from the tanks themselves. We are wondering if any other Voyage owners had this problem and how was it fixed. We would have to tear down walls and floors to get to the tanks.