Yep standard gas tank de-rusting methods, After you've physically broken up and fully removed the disturbed caked on metallic dust sludge layer. Its a big task for such a small tank as once started better keep going till all gone or maybe when tank next hot a clot lets go into the pump. While tank out study its mounting, especially the fracture prone bottom bolt, to configure a bottom cushion ring w/o the bolt for long term installation. Old Brits has a fix ready made too. I made a half fast rubber mount for the rear tang thats compliant enough to not fatique the tang yet stable to take my hand whacks w/o upset or clanks.
