Fuel blockage on seafari

[Oldboat]

I’m am not a materiel engineer but when I google aluminum and stainless togeather it’s says the 2 act like a Bettery and cause Corrosion . Looked at my old 17 year old tank with brass and aluminum and it was clean as a whistle. I know when I changed windows on the beach here in Florida some that were installed with stainless had corroded thru the holes leaving the caulk holding them in. Again don’t know much about the science .