Do you guys run ethanol in your fuel?
Even though it was answered by another poster, We do have Ethanol mixed fuels, but here in Cairns it is very hard to find, only about 2 or 3 places sell it (and I won't go near the stuff!!) but when the talk of Ethanol first started in Australia the Ducati distributor promptly put out a press release stating in no uncertain terms that Ethanol fuel should never be used in a Ducati, issues may arise with the fuel system and plastic tanks.
So I avoid it and only run BP standard unleaded and have never had an issue.