Found this on another board:
Please see this previous post:
I am putting together a list of folks who are having problems with their plastic tank expanding.
If enough people sign up, I'll draft a letter to Ducati NA explaining the problem and ask for them to remedy. My feeling is that enough people contact them (and are verifiable owners) they will step up. Otherwise, I don't know -- I am an attorney, I guess.
If you are having problems with your gas tank expanding, go here and please sign up:
Send this link to other folks you know who might be having this problem and reference the prior thread: http://ducatimonsterforum.org/index.php?topic=20672.0
I made the list private and NON posting, so you'll only get emails from ME directly. When you sign up, you'll get an autoreply asking you to email the moderator with your contact information, which is necessary for contacting DNA (or anything else).
For those of you who do not know, I am an attorney and whatever you feel about lawyers, I'm a good guy and have ridden for about 25 years now, Ducatis about 24 of that. I'm not interested in suing anyone, it's not my style, I am more of a "let's sit and have a beer and work this out" kind of attorney.
There is no charge for this at all to you. If there is some kind of settlement, it will only be with the primary requirement that our tanks are replaced with a non-expanding variety (or at least replaced with a guarantee that it will be replaced again if it expands). You'll have to be on the list to be part of any settlement.
Your information will be kept confidential.
Good luck to us all.