Sorry, Jerry, I misunderstood.
I don't know the sizes I'm afraid but, if the injector is the green topped version, I think it's a Marelli IW724 so you could try an auto factor or an injector cleaner business.
I found this set at Gotham Cycles. You could maybe message them to ask for details.
https://www.ebay.co.uk/itm/Ducati-74...-/334141436340