We bought this 1986 Grand Banks back in 2020. One of the selling points was that the tanks where replaced in 2019. Since then 3 out of the 4 tanks failed. I have a YouTube link below with all the details. My course of action may be to remove the 4 100 Gal tanks and replace with 4 75 Gal tanks so I don't have to to move the single 3208. Once I have transferred the fuel what can I do with the empty tanks to make them safe to cut out?