Does any body know if the fuel tanks are plastic or aluminum? I have a '07 Ducati GT1000 and these bikes came with plastic tanks that spread with the alcohol fuel additives here in the USA. Ducati had to replace a bunch under warranty due to safety issues with tanks coming loose due to this spreading. I had my new replacement Caswell coated to prevent this spreading problem. I'd hate to have to go this route with my new scrambler.