Hi I had the same prob with my 08 speedy took it back told triumph i wasnt happy with the finish their reply was its because you live near the sea (yeah sure ) so i took their hand book down to them
page one of owners handbook
quote(warantee claims for cosmetic deterioration of parts will not be allowed if it is apparent that this important advice has been neglected ) the advice is that it is cleaned and dried read your hand book take it back to the dealer it worked for me

tripple clamp and both bottom fork legs replaced