afer using the ducatidiag dumptool, i thought i had a problem with the bike engine as it seemed to be running on one cylinder, just didn't want to start.
Plugs had spark, swapped coils, these were ok.
Cleaned plugs and refitted, still the same.
Tried a lighter on the wet fuelled plug and was surprised it didn't flare with the wet fuel.
Got a cupful of isopropol alchohol and put it in the tank, shook the tank about and voila problem solved.
Must have been water in the fuel, or condensation from overwintering.
Thought it might help someone. I think meths does the same.