Just read the "official" report about the regatta on the Italian F18 Class web site.
Actually the X-4 got 5 wins out of 7 races (the other two with Monti-Raffaelli). Unfortunately they forgot ashore their personal weight correctors (they are a very light crew)and were ruled out.
It seems also that all the 6 X-4s which attended the regatta placed in the first 15.
The Italian F18 Class, which is going to organize the next F18 European, announced that very strict rule controls will be carried out in Dervio next July (expecially with regard to boat and crew weights) in order to avoid the nasty discussion occurred in the F18 Worlds held in France.